| RAB | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RAC | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RAD | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RAE | No Prefix Assigned | N/A |
| RAF | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RAG | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RAH | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RAK | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RAM | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RAN | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RAP | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RAQ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RAS | Blue Shield of California | https://blueshieldcaplans.com/ |
| RAT | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RAU | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| RAV | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RAW | No Prefix Assigned | N/A |
| RAX | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RAY | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RAZ | Blue Shield of California | https://blueshieldcaplans.com/ |
| RBA | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RBB | Blue Shield of California | https://blueshieldcaplans.com/ |
| RBC | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RBD | No Prefix Assigned | N/A |
| RBE | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RBF | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RBG | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RBH | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RBI | Blue Cross Blue Shield of Mississippi | https://www.bcbsms.com/ |
| RBJ | Blue Shield of California | https://blueshieldcaplans.com/ |
| RBK | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RBL | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RBM | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RBN | No Prefix Assigned | N/A |
| RBO | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RBP | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RBQ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RBR | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RBS | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RBT | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RBU | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RBV | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RBW | Blue Shield of Northeastern New York | https://www.bsneny.com/ |
| RBX | No Prefix Assigned | N/A |
| RBZ | Blue Shield of Northeastern New York | https://www.bsneny.com/ |
| RCB | Blue Cross of Idaho | https://www.bcidaho.com/ |
| RCC | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RCD | No Prefix Assigned | N/A |
| RCE | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RCG | No Prefix Assigned | N/A |
| RCI | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RCJ | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RCK | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RCL | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| RCM | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RCN | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RCO | No Prefix Assigned | N/A |
| RCP | No Prefix Assigned | N/A |
| RCQ | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RCR | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RCS | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RCT | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RCU | No Prefix Assigned | N/A |
| RCV | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RCW | Blue Cross Blue Shield of Louisiana | https://www.bcbsla.com/ |
| RCX | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RCZ | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RDA | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RDB | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| RDC | No Prefix Assigned | N/A |
| RDE | No Prefix Assigned | N/A |
| RDF | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RDH | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RDI | No Prefix Assigned | N/A |
| RDJ | No Prefix Assigned | N/A |
| RDK | Regence | https://www.regence.com/member/home |
| RDL | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RDM | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RDO | Blue Cross Blue Shield of North Dakota | https://www.bcbsnd.com/ |
| RDP | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RDQ | No Prefix Assigned | N/A |
| RDR | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RDU | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| RDW | Regence | https://www.regence.com/member/home |
| RDX | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RDY | No Prefix Assigned | N/A |
| REB | No Prefix Assigned | N/A |
| RED | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| REE | No Prefix Assigned | N/A |
| REF | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| REG | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| REH | No Prefix Assigned | N/A |
| REI | Blue Shield of California | https://blueshieldcaplans.com/ |
| REJ | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| REL | Blue Shield of California | https://blueshieldcaplans.com/ |
| REM | Blue Cross Blue Shield of Vermont | https://www.bcbsvt.com/individual-insurance |
| REN | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| REO | No Prefix Assigned | N/A |
| REP | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RER | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RES | No Prefix Assigned | N/A |
| RET | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| REU | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| REX | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| REY | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| REZ | No Prefix Assigned | N/A |
| RFA | Unknown Assignment | https://www.bcbs.com/ |
| RFB | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RFC | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RFD | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RFE | No Prefix Assigned | N/A |
| RFF | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RFG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RFH | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RFJ | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RFK | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RFL | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RFM | No Prefix Assigned | N/A |
| RFN | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RFP | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RFT | Blue Shield of California | https://blueshieldcaplans.com/ |
| RFV | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RFW | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| RFX | Blue Cross of Idaho | https://www.bcidaho.com/ |
| RFY | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RFZ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RGA | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RGD | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RGE | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RGF | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| RGG | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| RGH | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RGI | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RGJ | Premera Blue Cross | https://www.premera.com/visitor |
| RGL | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RGM | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RGN | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RGO | Regence | https://www.regence.com/member/home |
| RGQ | No Prefix Assigned | N/A |
| RGR | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RGS | Blue Cross of Idaho | https://www.bcidaho.com/ |
| RGT | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RGU | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RGW | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| RGY | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RGZ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RHA | Blue Shield of California | https://blueshieldcaplans.com/ |
| RHD | No Prefix Assigned | N/A |
| RHG | No Prefix Assigned | N/A |
| RHH | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RHK | Blue Cross Blue Shield of Nebraska | https://www.nebraskablue.com/ |
| RHM | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RHN | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RHO | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RHP | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RHQ | Regence | https://www.regence.com/member/home |
| RHS | No Prefix Assigned | N/A |
| RHT | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RHU | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RHV | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RHY | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RHZ | Blue Cross Blue Shield of Nebraska | https://www.nebraskablue.com/ |
| RIB | Blue Cross Blue Shield of Rhode Island | https://www.bcbsri.com/ |
| RIC | No Prefix Assigned | N/A |
| RID | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RIE | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RIG | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RIH | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| RII | Regence | https://www.regence.com/member/home |
| RIJ | Blue Shield of California | https://blueshieldcaplans.com/ |
| RIK | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RIM | Regence | https://www.regence.com/member/home |
| RIO | No Prefix Assigned | N/A |
| RIP | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RIQ | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RIR | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| RIT | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RIU | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RIW | No Prefix Assigned | N/A |
| RIX | No Prefix Assigned | N/A |
| RIY | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RIZ | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RJB | No Prefix Assigned | N/A |
| RJC | Anthem Blue Cross Blue Shield of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| RJD | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RJF | Regence | https://www.regence.com/member/home |
| RJG | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RJH | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RJI | No Prefix Assigned | N/A |
| RJJ | No Prefix Assigned | N/A |
| RJK | Blue Cross Blue Shield of Oklahoma | https://www.bcbsok.com/ |
| RJL | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RJM | No Prefix Assigned | N/A |
| RJN | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RJO | No Prefix Assigned | N/A |
| RJP | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RJQ | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RJR | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| RJS | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RJT | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RJV | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RJW | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RJY | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RJZ | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RKA | Blue Shield of California | https://blueshieldcaplans.com/ |
| RKB | No Prefix Assigned | N/A |
| RKD | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RKE | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RKF | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RKG | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RKH | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RKI | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RKJ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RKK | No Prefix Assigned | N/A |
| RKL | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RKM | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RKN | No Prefix Assigned | N/A |
| RKO | No Prefix Assigned | N/A |
| RKP | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RKR | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RKS | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RKT | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RKV | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RKW | Blue Cross Blue Shield of Rhode Island | https://www.bcbsri.com/ |
| RKX | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| RKY | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RKZ | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RLA | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RLB | No Prefix Assigned | N/A |
| RLC | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RLD | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RLF | Blue Cross Blue Shield of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| RLG | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RLH | No Prefix Assigned | N/A |
| RLI | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RLM | No Prefix Assigned | N/A |
| RLN | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RLO | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| RLR | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RLS | Unknown Assignment | https://www.bcbs.com/ |
| RLT | Blue Cross Blue Shield of Rhode Island | https://www.bcbsri.com/ |
| RLU | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RLV | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RLW | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RLX | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| RLY | Blue Shield of California | https://blueshieldcaplans.com/ |
| RLZ | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RMA | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RMC | Excellus Blue Cross Blue Shield of New York | https://www.excellusbcbs.com/ |
| RMD | Anthem Blue Cross Blue Shield of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| RMF | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RMG | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| RMH | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RMI | Blue Cross of Idaho | https://www.bcidaho.com/ |
| RMM | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| RMO | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RMQ | Premera Blue Cross | https://www.premera.com/visitor |
| RMR | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RMS | Premera Blue Cross | https://www.premera.com/visitor |
| RMT | Regence | https://www.regence.com/member/home |
| RMU | No Prefix Assigned | N/A |
| RMV | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RMY | No Prefix Assigned | N/A |
| RMZ | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RNA | Capital Blue Cross | https://www.capbluecross.com/ |
| RNB | Regence | https://www.regence.com/member/home |
| RNC | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RND | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RNF | Anthem Blue Cross Blue Shield of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| RNI | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RNL | Blue Cross Blue Shield of Louisiana | https://www.bcbsla.com/ |
| RNN | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RNO | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RNP | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RNQ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RNR | No Prefix Assigned | N/A |
| RNS | No Prefix Assigned | N/A |
| RNT | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RNW | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RNX | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RNZ | Blue Shield of California | https://blueshieldcaplans.com/ |
| ROA | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| ROD | Capital Blue Cross | https://www.capbluecross.com/ |
| ROF | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| ROG | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| ROH | No Prefix Assigned | N/A |
| ROI | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| ROJ | No Prefix Assigned | N/A |
| ROL | No Prefix Assigned | N/A |
| ROM | No Prefix Assigned | N/A |
| ROO | Independence Blue Cross | https://www.ibx.com/index.jsp |
| ROP | Blue Shield of California | https://blueshieldcaplans.com/ |
| ROR | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| ROS | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| ROT | No Prefix Assigned | N/A |
| ROU | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| ROV | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| ROW | Anthem Blue Cross Blue Shield of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| ROY | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| ROZ | Anthem Blue Cross Blue Shield of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| RPA | Regence | https://www.regence.com/member/home |
| RPB | No Prefix Assigned | N/A |
| RPC | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RPE | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RPF | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RPG | Blue Shield of California | https://blueshieldcaplans.com/ |
| RPI | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| RPL | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RPM | Premera Blue Cross | https://www.premera.com/visitor |
| RPN | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| RPP | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RPQ | No Prefix Assigned | N/A |
| RPR | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RPS | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RPT | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RPV | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RPW | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RPX | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RPY | Blue Cross Blue Shield of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| RPZ | Blue Cross Blue Shield of Louisiana | https://www.bcbsla.com/ |
| RQA | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RQC | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RQG | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RQI | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RQJ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RQK | No Prefix Assigned | N/A |
| RQL | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RQM | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RQN | No Prefix Assigned | N/A |
| RQO | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RQQ | No Prefix Assigned | N/A |
| RQR | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RQS | Blue Cross of Idaho | https://www.bcidaho.com/ |
| RQU | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RQY | No Prefix Assigned | N/A |
| RRA | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RRC | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RRD | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RRE | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RRF | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RRH | No Prefix Assigned | N/A |
| RRJ | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RRN | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RRP | Regence | https://www.regence.com/member/home |
| RRR | No Prefix Assigned | N/A |
| RRS | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RRT | Regence | https://www.regence.com/member/home |
| RRU | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RRV | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RRW | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RRX | No Prefix Assigned | N/A |
| RRY | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RRZ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RSB | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RSD | Blue Cross Blue Shield of Vermont | https://www.bcbsvt.com/individual-insurance |
| RSF | No Prefix Assigned | N/A |
| RSG | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RSH | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RSI | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RSJ | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RSK | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| RSL | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RSM | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RSO | Blue Shield of California | https://blueshieldcaplans.com/ |
| RSP | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RSR | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RSU | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RSV | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RTA | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| RTB | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RTC | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RTD | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| RTE | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| RTF | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RTG | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| RTH | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RTI | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RTJ | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RTK | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RTL | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RTM | No Prefix Assigned | N/A |
| RTN | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RTO | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RTQ | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RTR | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RTS | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RTT | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| RTU | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RTV | No Prefix Assigned | N/A |
| RTW | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RTX | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RTY | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RTZ | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RUA | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RUB | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RUC | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RUD | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RUE | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RUF | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RUG | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| RUH | No Prefix Assigned | N/A |
| RUI | No Prefix Assigned | N/A |
| RUJ | Premera Blue Cross | https://www.premera.com/visitor |
| RUK | No Prefix Assigned | N/A |
| RUL | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RUN | No Prefix Assigned | N/A |
| RUO | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RUP | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RUQ | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| RUS | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RUU | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RUV | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RUX | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RUY | No Prefix Assigned | N/A |
| RUZ | No Prefix Assigned | N/A |
| RVA | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RVB | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| RVC | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RVE | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RVF | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RVG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RVH | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RVJ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RVK | No Prefix Assigned | N/A |
| RVL | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RVM | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RVN | No Prefix Assigned | N/A |
| RVO | Blue Shield of California | https://blueshieldcaplans.com/ |
| RVR | Premera Blue Cross | https://www.premera.com/visitor |
| RVS | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RVT | No Prefix Assigned | N/A |
| RVV | No Prefix Assigned | N/A |
| RVW | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RWA | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RWB | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RWE | No Prefix Assigned | N/A |
| RWF | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RWG | Regence | https://www.regence.com/member/home |
| RWH | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RWI | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RWJ | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RWK | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| RWL | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| RWN | No Prefix Assigned | N/A |
| RWP | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| RWQ | No Prefix Assigned | N/A |
| RWR | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RWS | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RWT | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RWU | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RWV | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| RWW | No Prefix Assigned | N/A |
| RXA | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| RXH | No Prefix Assigned | N/A |
| RXI | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RXJ | No Prefix Assigned | N/A |
| RXL | No Prefix Assigned | N/A |
| RXM | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| RXP | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| RXQ | No Prefix Assigned | N/A |
| RXS | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RXT | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RXV | No Prefix Assigned | N/A |
| RXW | Capital Blue Cross | https://www.capbluecross.com/ |
| RXY | No Prefix Assigned | N/A |
| RYB | Independence Blue Cross | https://www.ibx.com/index.jsp |
| RYC | No Prefix Assigned | N/A |
| RYF | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RYG | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RYH | No Prefix Assigned | N/A |
| RYI | Regence | https://www.regence.com/member/home |
| RYL | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| RYM | Blue Shield of California | https://blueshieldcaplans.com/ |
| RYN | Blue Shield of California | https://blueshieldcaplans.com/ |
| RYO | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RYP | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| RYQ | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| RYR | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| RYS | No Prefix Assigned | N/A |
| RYU | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RYW | No Prefix Assigned | N/A |
| RYY | No Prefix Assigned | N/A |
| RYZ | No Prefix Assigned | N/A |
| RZA | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RZB | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RZC | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| RZE | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RZG | Premera Blue Cross | https://www.premera.com/visitor |
| RZH | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| RZJ | No Prefix Assigned | N/A |
| RZK | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RZO | Blue Shield of California | https://blueshieldcaplans.com/ |
| RZP | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| RZQ | No Prefix Assigned | N/A |
| RZS | No Prefix Assigned | N/A |
| RZT | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| RZU | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| RZV | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| RZX | No Prefix Assigned | N/A |
| RZY | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| RZZ | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
