| XAA | BCBS of Alabama (AL) |
| XAB | BCBS of Alabama (AL) |
| XAC | BCBS of Alabama (AL) |
| XAD | BCBS of Alabama (AL) |
| XAE | BCBS of Alabama (AL) |
| XAF | BCBS of Alabama (AL) |
| XAG | BCBS of Alabama (AL) |
| XAH | BCBS of Arizona (AZ) |
| XAI | BCBS of Alabama (AL) |
| XAJ | BCBS of Alabama (AL) |
| XAK | BCBS of Alabama (AL) |
| XAL | BCBS of Alabama (AL) |
| XAM | BCBS of Alabama (AL) |
| XAN | Anthem BCBS of Missouri (MO) |
| XAO | Blue shield(BS) of California (CA) |
| XAP | BCBS of Alabama (AL) |
| XAQ | BCBS of Alabama (AL) |
| XAR | BCBS of Alabama (AL) |
| XAS | BCBS of Alabama (AL) |
| XAT | BCBS of Alabama (AL) |
| XAU | Anthem BCBS of Colorado (CO) |
| XAV | BCBS of Alabama (AL) |
| XAW | Anthem Blue Cross(BC) of California (CA) |
| XAX | BCBS of Alabama (AL) |
| XAY | BCBS of Alabama (AL) |
| XAZ | BCBS of Alabama (AL) |
| XBA | Unassigned Prefix |
| XBB | BCBS of Arizona (AZ) |
| XBC | BCBS of Arizona (AZ) |
| XBD | BCBS of Arizona (AZ) |
| XBE | Unassigned Prefix |
| XBF | BCBS of Arizona (AZ) |
| XBG | Unassigned Prefix |
| XBH | BCBS of Arizona (AZ) |
| XBI | Unassigned Prefix |
| XBJ | Empire BCBS of New York (NY) |
| XBK | BCBS of Arizona (AZ) |
| XBL | Unassigned Prefix |
| XBM | BCBS of Arizona (AZ) |
| XBN | BCBS of Arizona (AZ) |
| XBO | BCBS of Arizona (AZ) |
| XBP | BCBS of Arizona (AZ) |
| XBQ | Unassigned Prefix |
| XBR | BCBS of Arizona (AZ) |
| XBS | BCBS of Arizona (AZ) |
| XBT | Unassigned Prefix |
| XBU | BCBS of Arizona (AZ) |
| XBV | Unassigned Prefix |
| XBW | Anthem BCBS of Wisconsin (WI) |
| XBX | BCBS of Arizona (AZ) |
| XBY | BCBS of Arizona (AZ) |
| XBZ | Unassigned Prefix |
| XCA | Arkansas (AR) Blue Cross |
| XCB | Arkansas (AR) Blue Cross |
| XCC | Arkansas (AR) Blue Cross |
| XCD | Anthem BCBS of Connecticut (CT) |
| XCE | Unassigned Prefix |
| XCF | Arkansas (AR) Blue Cross |
| XCG | Arkansas (AR) Blue Cross |
| XCH | Arkansas (AR) Blue Cross |
| XCI | BCBS of Massachusetts (MA) |
| XCJ | Arkansas (AR) Blue Cross |
| XCK | Arkansas (AR) Blue Cross |
| XCL | Arkansas (AR) Blue Cross |
| XCM | Arkansas (AR) Blue Cross |
| XCN | Unassigned Prefix |
| XCO | BCBS of Minnesota (MN) |
| XCP | Arkansas (AR) Blue Cross |
| XCQ | Arkansas (AR) Blue Cross |
| XCR | Arkansas (AR) Blue Cross |
| XCS | Arkansas (AR) Blue Cross |
| XCT | Anthem BCBS of Connecticut (CT) |
| XCU | Arkansas (AR) Blue Cross |
| XCV | Unassigned Prefix |
| XCW | Arkansas (AR) Blue Cross |
| XCX | Arkansas (AR) Blue Cross |
| XCY | Unassigned Prefix |
| XCZ | Unassigned Prefix |
| XDA | Anthem Blue Cross(BC) of California (CA) |
| XDB | Anthem Blue Cross(BC) of California (CA) |
| XDC | Anthem Blue Cross(BC) of California (CA) |
| XDD | Anthem Blue Cross(BC) of California (CA) |
| XDE | Anthem Blue Cross(BC) of California (CA) |
| XDF | Anthem Blue Cross(BC) of California (CA) |
| XDG | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| XDH | Anthem Blue Cross(BC) of California (CA) |
| XDI | Anthem Blue Cross(BC) of California (CA) |
| XDJ | Anthem Blue Cross(BC) of California (CA) |
| XDK | Anthem Blue Cross(BC) of California (CA) |
| XDL | Anthem Blue Cross(BC) of California (CA) |
| XDM | Anthem Blue Cross(BC) of California (CA) |
| XDN | Anthem Blue Cross(BC) of California (CA) |
| XDO | Anthem Blue Cross(BC) of California (CA) |
| XDP | Anthem Blue Cross(BC) of California (CA) |
| XDQ | Anthem Blue Cross(BC) of California (CA) |
| XDR | Anthem Blue Cross(BC) of California (CA) |
| XDS | Anthem Blue Cross(BC) of California (CA) |
| XDT | Anthem Blue Cross(BC) of California (CA) |
| XDU | Anthem Blue Cross(BC) of California (CA) |
| XDV | Anthem BCBS of Ohio (OH) |
| XDW | Anthem Blue Cross(BC) of California (CA) |
| XDX | Anthem Blue Cross(BC) of California (CA) |
| XDY | Anthem BCBS of Kentucky (KY) |
| XDZ | Anthem Blue Cross(BC) of California (CA) |
| XEA | Blue shield(BS) of California (CA) |
| XEB | Blue shield(BS) of California (CA) |
| XEC | Blue shield(BS) of California (CA) |
| XED | Blue shield(BS) of California (CA) |
| XEE | Blue shield(BS) of California (CA) |
| XEF | Blue shield(BS) of California (CA) |
| XEG | Blue shield(BS) of California (CA) |
| XEH | Blue shield(BS) of California (CA) |
| XEI | Blue shield(BS) of California (CA) |
| XEJ | Blue shield(BS) of California (CA) |
| XEK | Blue shield(BS) of California (CA) |
| XEL | Blue shield(BS) of California (CA) |
| XEM | Blue shield(BS) of California (CA) |
| XEN | Blue shield(BS) of California (CA) |
| XEO | Blue shield(BS) of California (CA) |
| XEP | Blue shield(BS) of California (CA) |
| XEQ | Blue shield(BS) of California (CA) |
| XER | Blue shield(BS) of California (CA) |
| XES | Blue shield(BS) of California (CA) |
| XET | Blue shield(BS) of California (CA) |
| XEU | Blue shield(BS) of California (CA) |
| XEV | Blue shield(BS) of California (CA) |
| XEW | Blue shield(BS) of California (CA) |
| XEX | Blue shield(BS) of California (CA) |
| XEY | Blue shield(BS) of California (CA) |
| XEZ | Blue shield(BS) of California (CA) |
| XFA | Anthem BCBS of Colorado (CO) |
| XFB | Anthem BCBS of Colorado (CO) |
| XFC | Anthem BCBS of Colorado (CO) |
| XFD | Anthem BCBS of Colorado (CO) |
| XFE | Anthem BCBS of Colorado (CO) |
| XFF | Anthem BCBS of Colorado (CO) |
| XFG | Anthem BCBS of Colorado (CO) |
| XFH | Anthem BCBS of Colorado (CO) |
| XFI | Anthem BCBS of Colorado (CO) |
| XFJ | Anthem BCBS of Colorado (CO) |
| XFK | Anthem BCBS of Colorado (CO) |
| XFL | Anthem BCBS of Colorado (CO) |
| XFM | Anthem BCBS of Colorado (CO) |
| XFN | Anthem BCBS of Colorado (CO) |
| XFO | Anthem BCBS of Colorado (CO) |
| XFP | Anthem BCBS of Colorado (CO) |
| XFQ | Anthem BCBS of New Hampshire (NH) |
| XFR | Anthem BCBS of Nevada (NV) |
| XFS | Anthem BCBS of Colorado (CO) |
| XFT | Anthem BCBS of Colorado (CO) |
| XFU | Blue shield(BS) of California (CA) |
| XFV | Unassigned Prefix |
| XFW | Anthem BCBS of Colorado (CO) |
| XFX | Anthem BCBS of Colorado (CO) |
| XFY | Anthem BCBS of Colorado (CO) |
| XFZ | Anthem BCBS of Colorado (CO) |
| XGA | Anthem BCBS of Georgia (GA) |
| XGB | Anthem BCBS of Connecticut (CT) |
| XGC | Anthem BCBS of Connecticut (CT) |
| XGD | Anthem BCBS of Connecticut (CT) |
| XGE | Anthem BCBS of Connecticut (CT) |
| XGF | Anthem BCBS of Connecticut (CT) |
| XGG | Anthem BCBS of Connecticut (CT) |
| XGH | Anthem BCBS of Connecticut (CT) |
| XGI | Anthem BCBS of Connecticut (CT) |
| XGJ | Anthem BCBS of Connecticut (CT) |
| XGK | Anthem BCBS of Connecticut (CT) |
| XGL | Anthem BCBS of Connecticut (CT) |
| XGM | Anthem BCBS of Connecticut (CT) |
| XGN | Anthem BCBS of Connecticut (CT) |
| XGO | Anthem BCBS of Connecticut (CT) |
| XGP | Anthem BCBS of Connecticut (CT) |
| XGQ | Empire BCBS of New York (NY) |
| XGR | Anthem BCBS of Connecticut (CT) |
| XGS | Anthem BCBS of Connecticut (CT) |
| XGT | Anthem BCBS of Connecticut (CT) |
| XGU | Anthem BCBS of New Hampshire (NH) |
| XGV | Anthem BCBS of Connecticut (CT) |
| XGW | Empire BCBS of New York (NY) |
| XGX | Empire BCBS of New York (NY) |
| XGY | Anthem BCBS of Connecticut (CT) |
| XGZ | Anthem BCBS of Connecticut (CT) |
| XHA | Highmark BCBS of Delaware (DE) |
| XHB | Anthem BCBS of Kentucky (KY) |
| XHC | Highmark BCBS of Delaware (DE) |
| XHD | Highmark BCBS of Delaware (DE) |
| XHE | Unassigned Prefix |
| XHF | Anthem BCBS of Virginia (VA) |
| XHG | Highmark BCBS of Delaware (DE) |
| XHH | Highmark BCBS of Delaware (DE) |
| XHI | BCBS of Rhode Island (RI) |
| XHJ | Anthem BCBS of Indiana (IN) |
| XHK | BCBS of Arizona (AZ) |
| XHL | Anthem Blue Cross(BC) of California (CA) |
| XHM | Unassigned Prefix |
| XHN | BCBS of Massachusetts (MA) |
| XHO | Blue Cross (BC) of Idaho (ID) |
| XHP | Highmark BCBS of Delaware (DE) |
| XHQ | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| XHR | Anthem BCBS of Connecticut (CT) |
| XHS | BCBS of Illinois (IL) |
| XHT | Premera BCBS of Alaska (AK) |
| XHU | Blue shield(BS) of California (CA) |
| XHV | Anthem BCBS of New Hampshire (NH) |
| XHW | Anthem BCBS of Georgia (GA) |
| XHX | Anthem Blue Cross(BC) of California (CA) |
| XHY | Anthem BCBS of Virginia (VA) |
| XHZ | Empire BCBS of New York (NY) |
| XIA | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIB | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIC | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XID | Blue Cross (BC) of Idaho (ID) |
| XIE | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIF | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIG | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIH | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XII | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIJ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIK | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIL | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIM | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIN | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIO | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIP | Anthem Blue Cross(BC) of California (CA) |
| XIQ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIR | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIS | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XIT | Unassigned Prefix |
| XIU | Unassigned Prefix |
| XIV | BCBS of Rhode Island (RI) |
| XIW | Anthem BCBS of Ohio (OH) |
| XIX | Anthem BCBS of Missouri (MO) |
| XIY | Unassigned Prefix |
| XIZ | Unassigned Prefix |
| XJA | Florida (FL) Blue |
| XJB | Florida (FL) Blue |
| XJC | Unassigned Prefix |
| XJD | Florida (FL) Blue |
| XJE | Florida (FL) Blue |
| XJF | Florida (FL) Blue |
| XJG | Florida (FL) Blue |
| XJH | Florida (FL) Blue |
| XJI | Florida (FL) Blue |
| XJJ | Florida (FL) Blue |
| XJK | Florida (FL) Blue |
| XJL | Florida (FL) Blue |
| XJM | Florida (FL) Blue |
| XJN | Florida (FL) Blue |
| XJO | Florida (FL) Blue |
| XJP | Florida (FL) Blue |
| XJQ | Florida (FL) Blue |
| XJR | Florida (FL) Blue |
| XJS | Florida (FL) Blue |
| XJT | Florida (FL) Blue |
| XJU | Florida (FL) Blue |
| XJV | Anthem BCBS of Maine (ME) |
| XJW | Florida (FL) Blue |
| XJX | Florida (FL) Blue |
| XJY | Florida (FL) Blue |
| XJZ | Florida (FL) Blue |
| XKA | Unassigned Prefix |
| XKB | Blue shield(BS) of California (CA) |
| XKC | BCBS of Illinois (IL) |
| XKD | Anthem BCBS of Georgia (GA) |
| XKE | Anthem BCBS of Georgia (GA) |
| XKF | Anthem BCBS of Georgia (GA) |
| XKG | Anthem BCBS of Georgia (GA) |
| XKH | Premera BCBS of Alaska (AK) |
| XKI | Anthem BCBS of Georgia (GA) |
| XKJ | Anthem BCBS of Georgia (GA) |
| XKK | Anthem BCBS of Georgia (GA) |
| XKL | Anthem BCBS of Georgia (GA) |
| XKM | Anthem Blue Cross(BC) of California (CA) |
| XKN | Anthem BCBS of Georgia (GA) |
| XKO | Anthem BCBS of Georgia (GA) |
| XKP | Anthem BCBS of Georgia (GA) |
| XKQ | Anthem Blue Cross(BC) of California (CA) |
| XKR | Anthem BCBS of Georgia (GA) |
| XKS | Anthem BCBS of Georgia (GA) |
| XKT | Anthem BCBS of Georgia (GA) |
| XKU | Anthem BCBS of Georgia (GA) |
| XKV | Anthem BCBS of Georgia (GA) |
| XKW | Anthem BCBS of Georgia (GA) |
| XKX | Anthem BCBS of Georgia (GA) |
| XKY | Anthem BCBS of Georgia (GA) |
| XKZ | Anthem BCBS of Georgia (GA) |
| XLA | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLB | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLC | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLD | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLE | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLF | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLG | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLH | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLI | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLJ | Anthem BCBS of Kentucky (KY) |
| XLK | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLL | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLM | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLN | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLO | Anthem Blue Cross(BC) of California (CA) |
| XLP | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLQ | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLR | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLS | BCBS of Western New York (WNY) |
| XLT | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLU | Empire BCBS of New York (NY) |
| XLV | Wellmark |
| XLW | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLX | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLY | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XLZ | Hawaii (HI) Medical Service Association (HMSA) BCBS |
| XMA | Blue Cross (BC) of Idaho (ID) |
| XMB | Blue Cross (BC) of Idaho (ID) |
| XMC | Anthem BCBS of Maine (ME) |
| XMD | Blue Cross (BC) of Idaho (ID) |
| XME | Blue Cross (BC) of Idaho (ID) |
| XMF | Blue Cross (BC) of Idaho (ID) |
| XMG | Blue Cross (BC) of Idaho (ID) |
| XMH | Blue Cross (BC) of Idaho (ID) |
| XMI | Blue Cross (BC) of Idaho (ID) |
| XMJ | Blue Cross (BC) of Idaho (ID) |
| XMK | Blue Cross (BC) of Idaho (ID) |
| XML | Blue Cross (BC) of Idaho (ID) |
| XMM | Blue Cross (BC) of Idaho (ID) |
| XMN | Blue Cross (BC) of Idaho (ID) |
| XMO | Blue Cross (BC) of Idaho (ID) |
| XMP | Blue Cross (BC) of Idaho (ID) |
| XMQ | Blue Cross (BC) of Idaho (ID) |
| XMR | Blue Cross (BC) of Idaho (ID) |
| XMS | Blue Cross (BC) of Idaho (ID) |
| XMT | Blue Cross (BC) of Idaho (ID) |
| XMU | Blue Cross (BC) of Idaho (ID) |
| XMV | Blue Cross (BC) of Idaho (ID) |
| XMW | BCBS of Illinois (IL) |
| XMX | Blue Cross (BC) of Idaho (ID) |
| XMY | Blue Cross (BC) of Idaho (ID) |
| XMZ | Wellmark |
| XNA | Anthem BCBS of Wisconsin (WI) |
| XNB | BCBS of Illinois (IL) |
| XNC | BCBS of North Carolina (NC) |
| XND | Regence BCBS |
| XNE | Regence BCBS |
| XNF | Regence BCBS |
| XNG | BCBS of Western New York (WNY) |
| XNH | Regence BCBS |
| XNI | Unassigned Prefix |
| XNJ | Regence BCBS |
| XNK | Blue shield(BS) of California (CA) |
| XNL | Anthem Blue Cross(BC) of California (CA) |
| XNM | Regence BCBS |
| XNN | Regence BCBS |
| XNO | Regence BCBS |
| XNP | Regence BCBS |
| XNQ | BCBS of Western New York (WNY) |
| XNR | Regence BCBS |
| XNS | Anthem BCBS of New Hampshire (NH) |
| XNT | Regence BCBS |
| XNU | Empire BCBS of New York (NY) |
| XNV | Regence BCBS |
| XNW | Anthem BCBS of Ohio (OH) |
| XNX | Anthem Blue Cross(BC) of California (CA) |
| XNY | Unassigned Prefix |
| XNZ | Empire BCBS of New York (NY) |
| XOA | BCBS of Illinois (IL) |
| XOB | BCBS of Illinois (IL) |
| XOC | BCBS of Illinois (IL) |
| XOD | BCBS of Illinois (IL) |
| XOE | BCBS of Illinois (IL) |
| XOF | BCBS of Illinois (IL) |
| XOG | BCBS of Illinois (IL) |
| XOH | BCBS of Illinois (IL) |
| XOI | Unassigned Prefix |
| XOJ | BCBS of Illinois (IL) |
| XOK | BCBS of Illinois (IL) |
| XOL | BCBS of Illinois (IL) |
| XOM | BCBS of Illinois (IL) |
| XON | BCBS of Illinois (IL) |
| XOO | BCBS of Illinois (IL) |
| XOP | BCBS of Illinois (IL) |
| XOQ | BCBS of Illinois (IL) |
| XOR | BCBS of Illinois (IL) |
| XOS | BCBS of Illinois (IL) |
| XOT | BCBS of Illinois (IL) |
| XOU | BCBS of Illinois (IL) |
| XOV | Unassigned Prefix |
| XOW | BCBS of Illinois (IL) |
| XOX | BCBS of Illinois (IL) |
| XOY | BCBS of Illinois (IL) |
| XOZ | BCBS of Illinois (IL) |
| XPA | Anthem BCBS of Indiana (IN) |
| XPB | Anthem BCBS of Indiana (IN) |
| XPC | Anthem BCBS of Indiana (IN) |
| XPD | Anthem BCBS of Indiana (IN) |
| XPE | Anthem BCBS of Indiana (IN) |
| XPF | Anthem BCBS of Indiana (IN) |
| XPG | Anthem BCBS of Indiana (IN) |
| XPH | Unassigned Prefix |
| XPI | Blue shield(BS) of California (CA) |
| XPJ | Unassigned Prefix |
| XPK | Anthem BCBS of Indiana (IN) |
| XPL | Unassigned Prefix |
| XPM | Unassigned Prefix |
| XPN | Anthem BCBS of Ohio (OH) |
| XPO | Blue Cross (BC) of Idaho (ID) |
| XPP | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| XPQ | Blue Cross (BC) of Idaho (ID) |
| XPR | Anthem BCBS of Indiana (IN) |
| XPS | Anthem BCBS of Kentucky (KY) |
| XPT | Unassigned Prefix |
| XPU | Anthem BCBS of Indiana (IN) |
| XPV | Anthem BCBS of Indiana (IN) |
| XPW | Anthem BCBS of Indiana (IN) |
| XPX | Anthem BCBS of Indiana (IN) |
| XPY | Unassigned Prefix |
| XPZ | Anthem BCBS of Ohio (OH) |
| XQA | Wellmark |
| XQB | Wellmark |
| XQC | Wellmark |
| XQD | Wellmark |
| XQE | Wellmark |
| XQF | Wellmark |
| XQG | Wellmark |
| XQH | Wellmark |
| XQI | Wellmark |
| XQJ | Wellmark |
| XQK | Wellmark |
| XQL | Wellmark |
| XQM | Wellmark |
| XQN | Wellmark |
| XQO | Wellmark |
| XQP | Wellmark |
| XQQ | Wellmark |
| XQR | Wellmark |
| XQS | Wellmark |
| XQT | Wellmark |
| XQU | Wellmark |
| XQV | Wellmark |
| XQW | Wellmark |
| XQX | Wellmark |
| XQY | Wellmark |
| XQZ | Wellmark |
| XRA | BCBS of Massachusetts (MA) |
| XRB | Anthem BCBS of Ohio (OH) |
| XRC | Anthem BCBS of Indiana (IN) |
| XRD | Blue shield(BS) of California (CA) |
| XRE | Anthem BCBS of Ohio (OH) |
| XRF | Unassigned Prefix |
| XRG | Anthem BCBS of Ohio (OH) |
| XRH | Anthem BCBS of Georgia (GA) |
| XRI | Anthem BCBS of Wisconsin (WI) |
| XRJ | Anthem BCBS of Virginia (VA) |
| XRK | Anthem BCBS of Virginia (VA) |
| XRL | Anthem BCBS of Ohio (OH) |
| XRM | Capital Blue Cross of Pennsylvania (PA) |
| XRN | Anthem BCBS of Virginia (VA) |
| XRO | Anthem BCBS of Ohio (OH) |
| XRP | Anthem Blue Cross(BC) of California (CA) |
| XRQ | Anthem BCBS of Virginia (VA) |
| XRR | Anthem Blue Cross(BC) of California (CA) |
| XRS | Anthem BCBS of Georgia (GA) |
| XRT | Blue shield(BS) of California (CA) |
| XRU | Anthem BCBS of Colorado (CO) |
| XRV | Anthem BCBS of Ohio (OH) |
| XRW | Anthem BCBS of Maine (ME) |
| XRX | BCBS of Massachusetts (MA) |
| XRY | Anthem BCBS of Connecticut (CT) |
| XRZ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XSA | BCBS of Kansas |
| XSB | BCBS of Kansas |
| XSC | Unassigned Prefix |
| XSD | BCBS of Kansas |
| XSE | BCBS of Kansas |
| XSF | BCBS of Kansas |
| XSG | Unassigned Prefix |
| XSH | BCBS of Kansas |
| XSI | Unassigned Prefix |
| XSJ | BCBS of Kansas |
| XSK | Unassigned Prefix |
| XSL | BCBS of Kansas |
| XSM | BCBS of Kansas |
| XSN | BCBS of Kansas |
| XSO | Anthem BCBS of Nevada (NV) |
| XSP | Unassigned Prefix |
| XSQ | Unassigned Prefix |
| XSR | Unassigned Prefix |
| XSS | Unassigned Prefix |
| XST | BCBS of Kansas |
| XSU | Anthem BCBS of Georgia (GA) |
| XSV | BCBS of Kansas |
| XSW | Blue shield(BS) of California (CA) |
| XSX | BCBS of Massachusetts (MA) |
| XSY | Anthem BCBS of Virginia (VA) |
| XSZ | BCBS of Kansas |
| XTA | Anthem BCBS of Kentucky (KY) |
| XTB | Anthem BCBS of Kentucky (KY) |
| XTC | Anthem BCBS of Kentucky (KY) |
| XTD | Anthem BCBS of Kentucky (KY) |
| XTE | Anthem BCBS of Kentucky (KY) |
| XTF | Anthem BCBS of Kentucky (KY) |
| XTG | Anthem BCBS of Kentucky (KY) |
| XTH | Anthem BCBS of Kentucky (KY) |
| XTI | Anthem BCBS of Kentucky (KY) |
| XTJ | Anthem BCBS of Kentucky (KY) |
| XTK | Anthem BCBS of Kentucky (KY) |
| XTL | Anthem BCBS of Ohio (OH) |
| XTM | Anthem BCBS of Connecticut (CT) |
| XTN | Anthem BCBS of Kentucky (KY) |
| XTO | Anthem BCBS of Virginia (VA) |
| XTP | Anthem BCBS of Virginia (VA) |
| XTQ | Anthem BCBS of Georgia (GA) |
| XTR | Unassigned Prefix |
| XTS | Anthem Blue Cross(BC) of California (CA) |
| XTT | Anthem BCBS of Colorado (CO) |
| XTU | Anthem BCBS of Ohio (OH) |
| XTV | Anthem BCBS of Kentucky (KY) |
| XTW | BCBS of Illinois (IL) |
| XTX | Wellmark |
| XTY | BCBS of Texas (TX) |
| XTZ | Anthem BCBS of Ohio (OH) |
| XUA | BCBS of Louisiana(LA) |
| XUB | BCBS of Louisiana(LA) |
| XUC | BCBS of Louisiana(LA) |
| XUD | BCBS of Louisiana(LA) |
| XUE | BCBS of Louisiana(LA) |
| XUF | BCBS of Louisiana(LA) |
| XUG | BCBS of Louisiana(LA) |
| XUH | BCBS of Louisiana(LA) |
| XUI | BCBS of Louisiana(LA) |
| XUJ | BCBS of Louisiana(LA) |
| XUK | BCBS of Louisiana(LA) |
| XUL | BCBS of Louisiana(LA) |
| XUM | BCBS of Louisiana(LA) |
| XUN | BCBS of Louisiana(LA) |
| XUO | Anthem BCBS of Indiana (IN) |
| XUP | BCBS of Louisiana(LA) |
| XUQ | BCBS of Louisiana(LA) |
| XUR | BCBS of Louisiana(LA) |
| XUS | BCBS of Louisiana(LA) |
| XUT | BCBS of Louisiana(LA) |
| XUU | BCBS of Louisiana(LA) |
| XUV | BCBS of Louisiana(LA) |
| XUW | BCBS of Louisiana(LA) |
| XUX | BCBS of Louisiana(LA) |
| XUY | BCBS of Louisiana(LA) |
| XUZ | Unassigned Prefix |
| XVA | Anthem BCBS of Maine (ME) |
| XVB | Anthem BCBS of Maine (ME) |
| XVC | Anthem BCBS of Maine (ME) |
| XVD | Premera BCBS of Alaska (AK) |
| XVE | Anthem BCBS of Maine (ME) |
| XVF | Anthem BCBS of Maine (ME) |
| XVG | Anthem BCBS of Maine (ME) |
| XVH | Anthem BCBS of Maine (ME) |
| XVI | Anthem BCBS of Maine (ME) |
| XVJ | Anthem BCBS of Maine (ME) |
| XVK | Unassigned Prefix |
| XVL | Anthem BCBS of Maine (ME) |
| XVM | Anthem BCBS of Maine (ME) |
| XVN | Unassigned Prefix |
| XVO | Unassigned Prefix |
| XVP | Anthem BCBS of Maine (ME) |
| XVQ | Horizon BCBS of New Jersey (NJ) |
| XVR | Anthem BCBS of Maine (ME) |
| XVS | BCBS of Illinois (IL) |
| XVT | Regence BCBS |
| XVU | BCBS of Illinois (IL) |
| XVV | Anthem BCBS of Connecticut (CT) |
| XVW | Anthem BCBS of Maine (ME) |
| XVX | Unassigned Prefix |
| XVY | Anthem BCBS of Georgia (GA) |
| XVZ | Unassigned Prefix |
| XWA | Unassigned Prefix |
| XWB | Unassigned Prefix |
| XWC | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XWD | Anthem BCBS of Colorado (CO) |
| XWE | Anthem BCBS of Missouri (MO) |
| XWF | Anthem BCBS of Missouri (MO) |
| XWG | Empire BCBS of New York (NY) |
| XWH | Anthem BCBS of Wisconsin (WI) |
| XWI | Wellmark |
| XWJ | Anthem BCBS of Connecticut (CT) |
| XWK | BCBS of Rhode Island (RI) |
| XWL | Anthem BCBS of Ohio (OH) |
| XWM | BCBS of Rhode Island (RI) |
| XWN | Anthem BCBS of Connecticut (CT) |
| XWO | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XWP | Anthem BCBS of Wisconsin (WI) |
| XWQ | Anthem BCBS of Indiana (IN) |
| XWR | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XWS | Wellmark |
| XWT | Premera BCBS of Alaska (AK) |
| XWU | Anthem BCBS of Colorado (CO) |
| XWV | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XWW | Unassigned Prefix |
| XWX | Anthem BCBS of Colorado (CO) |
| XWY | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XWZ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| XXA | BCBS of Massachusetts (MA) |
| XXB | BCBS of Massachusetts (MA) |
| XXC | BCBS of Massachusetts (MA) |
| XXD | BCBS of Massachusetts (MA) |
| XXE | BCBS of Massachusetts (MA) |
| XXF | BCBS of Massachusetts (MA) |
| XXG | BCBS of Massachusetts (MA) |
| XXH | BCBS of Massachusetts (MA) |
| XXI | BCBS of Massachusetts (MA) |
| XXJ | Anthem Blue Cross(BC) of California (CA) |
| XXK | BCBS of Massachusetts (MA) |
| XXL | Unassigned Prefix |
| XXM Blue Cross Prefix | BCBS of Massachusetts (MA) |
| XXN | BCBS of Massachusetts (MA) |
| XXO | Anthem BCBS of Indiana (IN) |
| XXP BCBS Prefix | BCBS of Massachusetts (MA) |
| XXQ | BCBS of Massachusetts (MA) |
| XXR | BCBS of Massachusetts (MA) |
| XXS | BCBS of Massachusetts (MA) |
| XXT | BCBS of Massachusetts (MA) |
| XXU BCBS Prefix | BCBS of Massachusetts (MA) |
| XXV | BCBS of Massachusetts (MA) |
| XXW | BCBS of Massachusetts (MA) |
| XXX | Unassigned Prefix |
| XXY | BCBS of Massachusetts (MA) |
| XXZ BCBS Prefix | BCBS of Massachusetts (MA) |
| XYA | Anthem BCBS of Virginia (VA) |
| XYB | BCBS Blue Care Network Michigan (MI) |
| XYC | BCBS of Oklahoma (OK) |
| XYD | BCBS Blue Care Network Michigan (MI) |
| XYE | BCBS Blue Care Network Michigan (MI) |
| XYF | BCBS Blue Care Network Michigan (MI) |
| XYG | BCBS Blue Care Network Michigan (MI) |
| XYH | BCBS Blue Care Network Michigan (MI) |
| XYI | Unassigned Prefix |
| XYJ | BCBS Blue Care Network Michigan (MI) |
| XYK | BCBS Blue Care Network Michigan (MI) |
| XYL BCBS Prefix | BCBS Blue Care Network Michigan (MI) |
| XYM | Regence BCBS |
| XYN | Anthem BCBS of Connecticut (CT) |
| XYO | Anthem Blue Cross(BC) of California (CA) |
| XYP | BCBS Blue Care Network Michigan (MI) |
| XYQ | BCBS Blue Care Network Michigan (MI) |
| XYR | BCBS Blue Care Network Michigan (MI) |
| XYS | BCBS Blue Care Network Michigan (MI) |
| XYT | BCBS of Illinois (IL) |
| XYU | BCBS Blue Care Network Michigan (MI) |
| XYV | BCBS Blue Care Network Michigan (MI) |
| XYW | BCBS Blue Care Network Michigan (MI) |
| XYX | BCBS Blue Care Network Michigan (MI) |
| XYY | BCBS Blue Care Network Michigan (MI) |
| XYZ | Anthem BCBS of Connecticut (CT) |
| XZA | BCBS of Minnesota (MN) |
| XZB | Unassigned Prefix |
| XZC | BCBS of Minnesota (MN) |
| XZD | BCBS of Minnesota (MN) |
| XZE | BCBS of Minnesota (MN) |
| XZF | Unassigned Prefix |
| XZG | Unassigned Prefix |
| XZH | BCBS of Minnesota (MN) |
| XZI | Unassigned Prefix |
| XZJ | Unassigned Prefix |
| XZK | Unassigned Prefix |
| XZL | BCBS of Minnesota (MN) |
| XZM | Unassigned Prefix |
| XZN | Unassigned Prefix |
| XZO | Unassigned Prefix |
| XZP | Unassigned Prefix |
| XZQ | BCBS of Minnesota (MN) |
| XZR | BCBS of Minnesota (MN) |
| XZS | Unassigned Prefix |
| XZT | Unassigned Prefix |
| XZU | BCBS of Minnesota (MN) |
| XZV | Unassigned Prefix |
| XZW | Unassigned Prefix |
| XZX | BCBS of Minnesota (MN) |
| XZY | Unassigned Prefix |
| XZZ | Unassigned Prefix |
