| TAA | Highmark BCBS of Pennsylvania (PA) |
| TAB | Anthem Blue Cross(BC) of California (CA) |
| TAC | Blue shield(BS) of California (CA) |
| TAD | Anthem BCBS of Connecticut (CT) |
| TAE | Anthem BCBS of Colorado (CO) |
| TAF | BCBS of Illinois (IL) |
| TAG | Anthem BCBS of Ohio (OH) |
| TAH | Premera BCBS of Alaska (AK) |
| TAI | Anthem Blue Cross(BC) of California (CA) |
| TAJ | BCBS of Illinois (IL) |
| TAK | Wellmark |
| TAL | BCBS of Minnesota (MN) |
| TAM | Anthem BCBS of Virginia (VA) |
| TAN | Unassigned Prefix |
| TAO | Unassigned Prefix |
| TAP | Premera BCBS of Alaska (AK) |
| TAQ | BCBS of Western New York (WNY) |
| TAR | Anthem BCBS of Ohio (OH) |
| TAS | Anthem BCBS of Wisconsin (WI) |
| TAT | Unassigned Prefix |
| TAU | BCBS of Massachusetts (MA) |
| TAV | Florida (FL) Blue |
| TAW | Anthem BCBS of New Hampshire (NH) |
| TAX | Unassigned Prefix |
| TAY | BCBS of North Carolina (NC) |
| TAZ | Unassigned Prefix |
| TBA | BCBS Blue Care Network Michigan (MI) |
| TBB | Anthem BCBS of Wisconsin (WI) |
| TBC | BCBS of Texas (TX) |
| TBD | BCBS of South Carolina (SC) / Southcarolinablues |
| TBE | BCBS of Illinois (IL) |
| TBF | Anthem BCBS of Missouri (MO) |
| TBG | Horizon BCBS of New Jersey (NJ) |
| TBH | Anthem BCBS of Missouri (MO) |
| TBI | Anthem BCBS of Virginia (VA) |
| TBJ | BCBS of Massachusetts (MA) |
| TBK | BCBS of Illinois (IL) |
| TBL | Unassigned Prefix |
| TBM | Highmark BCBS of Pennsylvania (PA) |
| TBN | Unassigned Prefix |
| TBO | Anthem BCBS of Missouri (MO) |
| TBP | BCBS Blue Care Network Michigan (MI) |
| TBQ | Anthem BCBS of Wisconsin (WI) |
| TBR | BCBS Blue Care Network Michigan (MI) |
| TBS | BCBS of Kansas City |
| TBT | Anthem Blue Cross(BC) of California (CA) |
| TBU | Unassigned Prefix |
| TBV | BCBS of Minnesota (MN) |
| TBW | Anthem BCBS of Virginia (VA) |
| TBX | BCBS Blue Care Network Michigan (MI) |
| TBY | Florida (FL) Blue |
| TBZ | BCBS of Massachusetts (MA) |
| TCA | BCBS of Alabama (AL) |
| TCB | Anthem BCBS of Ohio (OH) |
| TCC | BCBS of Illinois (IL) |
| TCD | Unassigned Prefix |
| TCE | Anthem BCBS of Ohio (OH) |
| TCF | Anthem BCBS of Ohio (OH) |
| TCG | BCBS of Texas (TX) |
| TCH | Anthem BCBS of Ohio (OH) |
| TCI | BCBS of Massachusetts (MA) |
| TCJ | BCBS of Massachusetts (MA) |
| TCK | BCBS of Massachusetts (MA) |
| TCL | Anthem BCBS of Georgia (GA) |
| TCM | BCBS Blue Care Network Michigan (MI) |
| TCN | Unassigned Prefix |
| TCO | BCBS of North Carolina (NC) |
| TCP | BCBS of Texas (TX) |
| TCQ | Blue shield(BS) of California (CA) |
| TCR | BCBS of Texas (TX) |
| TCS | Anthem BCBS of Kentucky (KY) |
| TCT | Anthem BCBS of Ohio (OH) |
| TCU | Unassigned Prefix |
| TCV | Florida (FL) Blue |
| TCW | Unassigned Prefix |
| TCX | Blue shield(BS) of California (CA) |
| TCY | Unassigned Prefix |
| TCZ | Unassigned Prefix |
| TDA | BCBS of Illinois (IL) |
| TDB | Blue Cross (BC) of Idaho (ID) |
| TDC | Highmark BCBS of Pennsylvania (PA) |
| TDD | Unassigned Prefix |
| TDE | BCBS of Minnesota (MN) |
| TDF | Unassigned Prefix |
| TDG | Anthem BCBS of Nevada (NV) |
| TDH | Unassigned Prefix |
| TDI | Blue shield(BS) of California (CA) |
| TDJ | BCBS Blue Care Network Michigan (MI) |
| TDK | BCBS of North Carolina (NC) |
| TDL | Highmark BCBS of Pennsylvania (PA) |
| TDM | Credence BCBS |
| TDN | Anthem BCBS of Ohio (OH) |
| TDO | Anthem BCBS of Virginia (VA) |
| TDP | Anthem BCBS of Wisconsin (WI) |
| TDQ | BCBS Blue Care Network Michigan (MI) |
| TDR | Unassigned Prefix |
| TDS | Unassigned Prefix |
| TDT | Premera BCBS of Alaska (AK) |
| TDU | Unassigned Prefix |
| TDV | BCBS Blue Care Network Michigan (MI) |
| TDW | Unassigned Prefix |
| TDX | Blue shield(BS) of California (CA) |
| TDY | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TDZ | Anthem BCBS of Georgia (GA) |
| TEA BCBS Prefix | BCBS of Illinois (IL) |
| TEB | Horizon BCBS of New Jersey (NJ) |
| TEC | BCBS of Texas (TX) |
| TED | Unassigned Prefix |
| TEE | Unassigned Prefix |
| TEF | Blue shield(BS) of California (CA) |
| TEG | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| THE | Blue shield(BS) of California (CA) |
| TEI | Anthem BCBS of Ohio (OH) |
| TEJ | BCBS of Western New York (WNY) |
| TEK | BCBS of Illinois (IL) |
| TEL | BCBS of Alabama (AL) |
| TEM | Unassigned Prefix |
| TEN | Unassigned Prefix |
| TEO | Unassigned Prefix |
| TEP | BCBS of Illinois (IL) |
| TEQ | BCBS of Alabama (AL) |
| TER | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TES | Blue shield(BS) of California (CA) |
| TET | BCBS of South Carolina (SC) / Southcarolinablues |
| TEU | Unassigned Prefix |
| TEV | BCBS Blue Care Network Michigan (MI) |
| TEW | BCBS of Illinois (IL) |
| TEX | BCBS of Texas (TX) |
| TEY | Unassigned Prefix |
| TEZ | Unassigned Prefix |
| TFA | Unassigned Prefix |
| TFB | Regence BCBS |
| TFC | Regence BCBS |
| TFD | BCBS of Illinois (IL) |
| TFE | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TFF | Anthem BCBS of Ohio (OH) |
| TFG | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TFH | BCBS of Tennessee (TN) |
| TFI | Blue Cross (BC) of Idaho (ID) |
| TFJ | Anthem BCBS of Connecticut (CT) |
| TFK | Unassigned Prefix |
| TFL | BCBS of Minnesota (MN) |
| TFM | BCBS of Minnesota (MN) |
| TFN | Unassigned Prefix |
| TFO | Unassigned Prefix |
| TFP | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TFQ | Unassigned Prefix |
| TFR | BCBS of Alabama (AL) |
| TFS | Unassigned Prefix |
| TFT | Unassigned Prefix |
| TFU | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TFV | Unassigned Prefix |
| TFW | Unassigned Prefix |
| TFX | Highmark BCBS of Pennsylvania (PA) |
| TFY | BCBS of Illinois (IL) |
| TFZ | BCBS of Illinois (IL) |
| TGA | Empire BCBS of New York (NY) |
| TGB | BCBS of Texas (TX) |
| TGC | Anthem BCBS of Ohio (OH) |
| TGD | BCBS of Western New York (WNY) |
| TGE | Empire BCBS of New York (NY) |
| TGF | BCBS of Texas (TX) |
| TGG | Unassigned Prefix |
| TGH | BCBS of Illinois (IL) |
| TGI | BCBS of Western New York (WNY) |
| TGJ | Wellmark |
| TGK | Unassigned Prefix |
| TGL | BCBS of Arizona (AZ) |
| TGM | Florida (FL) Explore my Plan |
| TGN | BCBS Blue Care Network Michigan (MI) |
| TGO | Regence BCBS |
| TGP | Unassigned Prefix |
| TGQ | Anthem BCBS of Wisconsin (WI) |
| TGR | Anthem BCBS of Missouri (MO) |
| TGS | Empire BCBS of New York (NY) |
| TGT | Unassigned Prefix |
| TGU | Unassigned Prefix |
| TGV | Unassigned Prefix |
| TGW | Horizon BCBS of New Jersey (NJ) |
| TGX BCBS Prefix | Blue shield(BS) of California (CA) |
| TGY | Unassigned Prefix |
| TGZ | Anthem BCBS of Colorado (CO) |
| THA | Anthem BCBS of Kentucky (KY) |
| THB | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| THC | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| THD | Wellmark |
| THE | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| THF | BCBS of Texas (TX) |
| THG | BCBS of Alabama (AL) |
| THH | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| THI | Unassigned Prefix |
| THJ | Anthem BCBS of Wisconsin (WI) |
| THK | Unassigned Prefix |
| THL | Unassigned Prefix |
| THM | Florida (FL) Blue |
| THN | Wellmark |
| THO | Unassigned Prefix |
| THP | Unassigned Prefix |
| THQ | Florida (FL) Blue |
| THR | Regence BCBS |
| THS | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| THT | Florida (FL) Blue |
| THU | Anthem Blue Cross(BC) of California (CA) |
| THV | BCBS of Alabama (AL) |
| THW | Blue shield(BS) of California (CA) |
| THX | BCBS of Tennessee (TN) |
| THY | Anthem BCBS of Virginia (VA) |
| THZ | Anthem BCBS of Virginia (VA) |
| TIA | Unassigned Prefix |
| TIB | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TIC | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TID | BCBS of Western New York (WNY) |
| TIE | BCBS Blue Care Network Michigan (MI) |
| TIF | BCBS of Massachusetts (MA) |
| TIG | BCBS of Nebraska (NE) |
| TIH | Unassigned Prefix |
| TII | Unassigned Prefix |
| TIJ | BCBS of North Carolina (NC) |
| TIK | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TIL | Unassigned Prefix |
| TIM | Regence BCBS |
| TIN | BCBS of South Carolina (SC) / Southcarolinablues |
| TIO | Anthem BCBS of Ohio (OH) |
| TIP | Anthem BCBS of Virginia (VA) |
| TIQ | Unassigned Prefix |
| TIR | Anthem BCBS of Virginia (VA) |
| TIS | Anthem BCBS of Georgia (GA) |
| TIT | Unassigned Prefix |
| TIU | BCBS Blue Care Network Michigan (MI) |
| TIV | Regence BCBS |
| TIW | BCBS of Illinois (IL) |
| TIX | Blue shield(BS) of California (CA) |
| TIY BCBS Prefix | BCBS Blue Care Network Michigan (MI) |
| TIZ | Blue shield(BS) of California (CA) |
| TJA | Anthem BCBS of Virginia (VA) |
| TJB | BCBS of Texas (TX) |
| TJC | Unassigned Prefix |
| TJD | BCBS Blue Care Network Michigan (MI) |
| THE | Unassigned Prefix |
| TJF | BCBS of Texas (TX) |
| TJG | Unassigned Prefix |
| TJH | Anthem BCBS of Ohio (OH) |
| TJI | Unassigned Prefix |
| TJJ | BCBS of Massachusetts (MA) |
| TJK | BCBS of Texas (TX) |
| TJL | Unassigned Prefix |
| TJM | Unassigned Prefix |
| TJN | BCBS of Alabama (AL) |
| TJO | Unassigned Prefix |
| TJP | BCBS Blue Care Network Michigan (MI) |
| TJQ | Blue shield(BS) of California (CA) |
| TJR | BCBS of Nebraska (NE) |
| TJS | Anthem Blue Cross(BC) of California (CA) |
| TJT | Unassigned Prefix |
| TJU | Horizon BCBS of New Jersey (NJ) |
| TJV BCBS Prefix | Blue shield(BS) of California (CA) |
| TJW | BCBS of Massachusetts (MA) |
| TJX | BCBS of Massachusetts (MA) |
| TJY | BCBS of Texas (TX) |
| TJZ | BCBS of Illinois (IL) |
| TKA | BCBS Blue Care Network Michigan (MI) |
| TKB | BCBS of Mississippi (MS) |
| TKC | Anthem BCBS of Ohio (OH) |
| TKD | Premera BCBS of Alaska (AK) |
| TKE | BCBS of Illinois (IL) |
| TKF | Regence BCBS |
| TKG | BCBS of Illinois (IL) |
| TKH | BCBS of Illinois (IL) |
| TKI | Anthem BCBS of Ohio (OH) |
| TKJ | Unassigned Prefix |
| TKK | BCBS of Illinois (IL) |
| TKL | BCBS of Texas (TX) |
| TKM | Unassigned Prefix |
| TKN | Wellmark |
| TKO | BCBS of Rhode Island (RI) |
| TKP | BCBS of Massachusetts (MA) |
| TKQ | Unassigned Prefix |
| TKR | Unassigned Prefix |
| TKS | Unassigned Prefix |
| TKT | BCBS of Texas (TX) |
| TKU | Unassigned Prefix |
| TKV | Unassigned Prefix |
| TKW | BCBS Blue Care Network Michigan (MI) |
| TKX | BCBS of Texas (TX) |
| TKY | BCBS Blue Care Network Michigan (MI) |
| TKZ | BCBS Blue Care Network Michigan (MI) |
| TLA | Blue shield(BS) of California (CA) |
| TLB | Unassigned Prefix |
| TLC | Unassigned Prefix |
| TLD | BCBS of Massachusetts (MA) |
| TLE | BCBS of Illinois (IL) |
| TLF | BCBS of North Carolina (NC) |
| TLG | Unassigned Prefix |
| TLH | Horizon BCBS of New Jersey (NJ) |
| TLI | BCBS of Massachusetts (MA) |
| TLJ | BCBS of Alabama (AL) |
| TLK | BCBS Blue Care Network Michigan (MI) |
| TLL | Anthem Blue Cross(BC) of California (CA) |
| TLM | Blue shield(BS) of California (CA) |
| TLN | BCBS of Illinois (IL) |
| TLO | BCBS of Illinois (IL) |
| TLP | Anthem BCBS of Connecticut (CT) |
| TLQ | Anthem BCBS of Ohio (OH) |
| TLR | BCBS of Illinois (IL) |
| TLS | Unassigned Prefix |
| TLT | BCBS of Illinois (IL) |
| TLU | BCBS of Illinois (IL) |
| TLV | BCBS of Rhode Island (RI) |
| TLW | BCBS of Western New York (WNY) |
| TLX | BCBS of Illinois (IL) |
| TLY | BCBS of Western New York (WNY) |
| TLZ | Unassigned Prefix |
| TMA | Blue shield(BS) of California (CA) |
| TMB | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TMC | BCBS of Louisiana (LA) |
| TMD | BCBS of Texas (TX) |
| TME | Blue Cross (BC) of Idaho (ID) |
| TMF | Unassigned Prefix |
| TMG | BCBS of Alabama (AL) |
| TMH | BCBS Blue Care Network Michigan (MI) |
| TMI | BCBS of Massachusetts (MA) |
| TMJ | BCBS of Illinois (IL) |
| TMK | BCBS of Texas (TX) |
| TML | BCBS of Illinois (IL) |
| TMM | BCBS of Texas (TX) |
| TMN | Anthem Blue Cross(BC) of California (CA) |
| TMO | BCBS of North Dakota (ND) |
| TMP | Premera Blue Cross (BC) of Alaska (AK) |
| TMQ | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TMR | Anthem BCBS of Kentucky (KY) |
| TMS | BCBS of Illinois (IL) |
| TMT | Anthem BCBS of Missouri (MO) |
| TMU | Horizon BCBS of New Jersey (NJ) |
| TMV | BCBS of Illinois (IL) |
| TMW | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TMX | BCBS of Alabama (AL) |
| TMY | Regence BCBS |
| TMZ | BCBS of Arizona (AZ) |
| TNA | BCBS of South Carolina (SC) / Southcarolinablues |
| TNB | Unassigned Prefix |
| TNC | Unassigned Prefix |
| TND | Unassigned Prefix |
| TNE | Wellmark |
| TNF | Anthem BCBS of Ohio (OH) |
| TNG | Regence BCBS |
| TNH | Unassigned Prefix |
| TNI | BCBS Blue Care Network Michigan (MI) |
| TNJ | Unassigned Prefix |
| TNK | Anthem BCBS of Wisconsin (WI) |
| TNL | BCBS of Minnesota (MN) |
| TNM | Unassigned Prefix |
| TNN | Arkansas (AR) Blue Cross |
| TNO | BCBS of North Carolina (NC) |
| TNP | Unassigned Prefix |
| TNQ | Anthem BCBS of Ohio (OH) |
| TNR | BCBS of Massachusetts (MA) |
| TNS | Excellus BCBS of New York (NY) |
| TNT | Unassigned Prefix |
| TNU | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TNV | Empire BCBS of New York (NY) |
| TNW | Wellmark |
| TNX | BCBS of North Carolina (NC) |
| TNY | Excellus BCBS of New York (NY) |
| TNZ | BCBS of Tennessee (TN) |
| TOA BCBS Prefix | Anthem BCBS of Kentucky (KY) |
| TOB | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TOC | Arkansas (AR) Blue Cross |
| TOD | BCBS of Alabama (AL) |
| TOE | BCBS of Kansas |
| TOF | Unassigned Prefix |
| TOG | Regence BCBS |
| TOH | Anthem BCBS of Ohio (OH) |
| TOI | Unassigned Prefix |
| TOJ | Unassigned Prefix |
| TOK | BCBS of North Carolina (NC) |
| TOL | BCBS of Minnesota (MN) |
| TOM | Wellmark |
| TON | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TOO | Blue shield(BS) of California (CA) |
| TOP | Unassigned Prefix |
| TOQ | BCBS of Minnesota (MN) |
| TOR | Unassigned Prefix |
| TOS | Unassigned Prefix |
| TOT | Anthem BCBS of Georgia (GA) |
| TOU | BCBS Blue Care Network Michigan (MI) |
| TOV | BCBS Blue Care Network Michigan (MI) |
| TOW | Unassigned Prefix |
| TOX | BCBS of Minnesota (MN) |
| TOY | BCBS Blue Care Network Michigan (MI) |
| TOZ | Unassigned Prefix |
| TPA | Unassigned Prefix |
| TPB | BCBS Blue Care Network Michigan (MI) |
| TPC | Wellmark |
| TPD | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TPE | Anthem BCBS of Kentucky (KY) |
| TPF | Anthem Blue Cross(BC) of California (CA) |
| TPG | BCBS of Rhode Island (RI) |
| TPH | Wellmark |
| TPI | BCBS of Illinois (IL) |
| TPJ | Unassigned Prefix |
| TPK | Unassigned Prefix |
| TPL | Anthem BCBS of Kentucky (KY) |
| TPM | BCBS Blue Care Network Michigan (MI) |
| TPN | Anthem BCBS of Ohio (OH) |
| TPO | Unassigned Prefix |
| TPP | Unassigned Prefix |
| TPQ | Wellmark |
| TPR | Wellmark |
| TPS | Anthem Blue Cross(BC) of California (CA) |
| TPT | Excellus BCBS of New York (NY) |
| TPU | Anthem BCBS of Virginia (VA) |
| TPV | BCBS of Illinois (IL) |
| TPW | Regence BCBS |
| TPX | Anthem BCBS of Kentucky (KY) |
| TPY | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TPZ | Unassigned Prefix |
| TQA | Premera Blue Cross (BC) of Alaska (AK) |
| TQB | Regence BCBS |
| TQC | BCBS of Minnesota (MN) |
| TQD | BCBS Blue Care Network Michigan (MI) |
| TQE | Anthem BCBS of Indiana (IN) |
| TQF | BCBS Blue Care Network Michigan (MI) |
| TQG | Highmark BCBS of Pennsylvania (PA) |
| TQH | BCBS of Massachusetts (MA) |
| TQI | Wellmark |
| TQJ | Unassigned Prefix |
| TQK | BCBS Blue Care Network Michigan (MI) |
| TQL | Horizon BCBS of New Jersey (NJ) |
| TQM | BCBS of Minnesota (MN) |
| TQN | Anthem BCBS of Colorado (CO) |
| TQO | BCBS of North Dakota (ND) |
| TQP | Anthem BCBS of Ohio (OH) |
| TQQ | BCBS of Minnesota (MN) |
| TQR | Regence BCBS |
| TQS | Anthem BCBS of Ohio (OH) |
| TQT | Horizon BCBS of New Jersey (NJ) |
| TQU | BCBS of Minnesota (MN) |
| TQV | Unassigned Prefix |
| TQW | Horizon BCBS of New Jersey (NJ) |
| TQX | Unassigned Prefix |
| TQY | BCBS of Minnesota (MN) |
| TQZ | BCBS of Massachusetts (MA) |
| TRA BCBS Prefix | BCBS of Illinois (IL) |
| TRB | BCBS of Illinois (IL) |
| TRC | BCBS of Illinois (IL) |
| TRD | Anthem BCBS of Wisconsin (WI) |
| TRE | BCBS of Arizona (AZ) |
| TRF | BCBS Blue Care Network Michigan (MI) |
| TRG | Premera Blue Cross (BC) of Alaska (AK) |
| TRH | Anthem BCBS of Virginia (VA) |
| TRI | Capital Blue Cross of Pennsylvania (PA) |
| TRJ | Anthem Blue Cross(BC) of California (CA) |
| TRK | BCBS of Illinois (IL) |
| TRL | BCBS of Massachusetts (MA) |
| TRM | Blue shield(BS) of California (CA) |
| TRN | Anthem BCBS of Connecticut (CT) |
| TRO | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TRP | BCBS of Minnesota (MN) |
| TRQ | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TRR | Wellmark |
| TRS | BCBS of Kansas City |
| TRT | BCBS of Alabama (AL) |
| TRU | Blue Cross (BC) of Idaho (ID) |
| TRV | BCBS of Nebraska (NE) |
| TRW | BCBS of Illinois (IL) |
| TRX | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TRY | BCBS of Minnesota (MN) |
| TRZ | Highmark BCBS of Pennsylvania (PA) |
| TSA | BCBS of Texas (TX) |
| TSB | BCBS of Minnesota (MN) |
| TSC | Wellmark |
| TSD | Wellmark |
| TSE | Anthem BCBS of Georgia (GA) |
| TSF | BCBS of Kansas City |
| TSG | Wellmark |
| TSH | Blue Cross (BC) of Idaho (ID) |
| TSI | BCBS of Illinois (IL) |
| TSJ | Anthem BCBS of Connecticut (CT) |
| TSK | Anthem BCBS of Virginia (VA) |
| TSL | BCBS of Nebraska (NE) |
| TSM | Highmark BCBS of Pennsylvania (PA) |
| TSN | Anthem BCBS of Georgia (GA) |
| TSO | Unassigned Prefix |
| TSP | Wellmark |
| TSQ | Wellmark |
| TSR | Unassigned Prefix |
| TSS | Unassigned Prefix |
| TST | Premera BCBS of Alaska (AK) |
| TSU | Premera Blue Cross (BC) of Alaska (AK) |
| TSV | Wellmark |
| TSW | Anthem BCBS of Georgia (GA) |
| TSX | Anthem BCBS of Ohio (OH) |
| TSY | Unassigned Prefix |
| TSZ | Unassigned Prefix |
| TTA | Blue Cross (BC) of Idaho (ID) |
| TTB | BCBS of Texas (TX) |
| TTC | Anthem BCBS of Ohio (OH) |
| TTD | Wellmark |
| TTE | Wellmark |
| TTF | BCBS of Texas (TX) |
| TTG | Anthem BCBS of Ohio (OH) |
| TTH | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TTI | Unassigned Prefix |
| TTJ | Florida (FL) Blue |
| TTK | BCBS of Arizona (AZ) |
| TTL | Anthem BCBS of Indiana (IN) |
| TTM | Anthem BCBS of Ohio (OH) |
| TTN | Anthem BCBS of Ohio (OH) |
| TTO | Unassigned Prefix |
| TTP | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TTQ | Unassigned Prefix |
| TTR | BCBS Blue Care Network Michigan (MI) |
| TTS | Anthem BCBS of Virginia (VA) |
| TTT | Unassigned Prefix |
| TTU | BCBS of Mississippi (MS) |
| TTV | Wellmark |
| TTW | Anthem BCBS of Georgia (GA) |
| TTX | BCBS of Massachusetts (MA) |
| TTY | Anthem BCBS of Kentucky (KY) |
| TTZ | Anthem BCBS of Ohio (OH) |
| TUA | Capital Blue Cross of Pennsylvania (PA) |
| TUB | BCBS of Illinois (IL) |
| TUC | Anthem BCBS of Ohio (OH) |
| TUD | Unassigned Prefix |
| TUE | Highmark BCBS of Pennsylvania (PA) |
| TUF | BCBS of Massachusetts (MA) |
| TUG | Anthem BCBS of Kentucky (KY) |
| TUH | Unassigned Prefix |
| TUI | Regence BCBS |
| TUJ | Unassigned Prefix |
| TUK | BCBS of Illinois (IL) |
| TUL | Horizon BCBS of New Jersey (NJ) |
| TUM | Unassigned Prefix |
| TUN | BCBS of Alabama (AL) |
| TUO | BCBS of Tennessee (TN) |
| TUP | Anthem BCBS of Wisconsin (WI) |
| TUQ | Unassigned Prefix |
| TUR | Empire BCBS of New York (NY) |
| TUS | Unassigned Prefix |
| TUT | BCBS of Illinois (IL) |
| TUU | Horizon BCBS of New Jersey (NJ) |
| TUV | Horizon BCBS of New Jersey (NJ) |
| TUW | Unassigned Prefix |
| TUX | BCBS of Illinois (IL) |
| TUY | BCBS Blue Care Network Michigan (MI) |
| TUZ | Anthem BCBS of Ohio (OH) |
| TVA | BCBS of Tennessee (TN) |
| TVB | Unassigned Prefix |
| TVC | BCBS of Massachusetts (MA) |
| TVD | Unassigned Prefix |
| TVE | Wellmark |
| TVF | Regence BCBS |
| TVG | Anthem BCBS of Missouri (MO) |
| TVH | Unassigned Prefix |
| TVI | BCBS of Tennessee (TN) |
| TVJ | BCBS of Minnesota (MN) |
| TVK | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TVL | Anthem BCBS of Virginia (VA) |
| TVM | Anthem BCBS of Virginia (VA) |
| TVN | Anthem BCBS of Georgia (GA) |
| TVO | BCBS of Tennessee (TN) |
| TVP | Unassigned Prefix |
| TVQ | Unassigned Prefix |
| TVR | Unassigned Prefix |
| TVS | Anthem BCBS of Virginia (VA) |
| TVT | BCBS of Minnesota (MN) |
| TVU | BCBS Blue Care Network Michigan (MI) |
| TVV | Horizon BCBS of New Jersey (NJ) |
| TVW | Anthem BCBS of Connecticut (CT) |
| TVX | Unassigned Prefix |
| TVY | Wellmark |
| TVZ | Regence BCBS |
| TWA | Anthem BCBS of Georgia (GA) |
| TWB | BCBS of Minnesota (MN) |
| TWC | BCBS of Illinois (IL) |
| TWD | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TWE | BCBS of Massachusetts (MA) |
| TWF | Horizon BCBS of New Jersey (NJ) |
| TWG | BCBS of North Carolina (NC) |
| TWH | Blue shield(BS) of California (CA) |
| TWI | Regence BCBS |
| TWJ | Empire BCBS of New York (NY) |
| TWK | Anthem BCBS of Ohio (OH) |
| TWL | BCBS of Alabama (AL) |
| TWM | Empire BCBS of New York (NY) |
| TWN | Regence BCBS |
| TWO | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| TWP | Horizon BCBS of New Jersey (NJ) |
| TWQ | Empire BCBS of New York (NY) |
| TWR | Anthem Blue Cross(BC) of California (CA) |
| TWS | Unassigned Prefix |
| TWT | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TWU | Anthem BCBS of Ohio (OH) |
| TWV | BCBS of Illinois (IL) |
| TWW | Anthem BCBS of Ohio (OH) |
| TWX | BCBS of Texas (TX) |
| TWY | BCBS of Western New York (WNY) |
| TWZ | Unassigned Prefix |
| TXA | BCBS of Illinois (IL) |
| TXB | Unassigned Prefix |
| TXC | BCBS of Alabama (AL) |
| TXD | BCBS of Texas (TX) |
| TXE | Unassigned Prefix |
| TXF | Unassigned Prefix |
| TXG | Unassigned Prefix |
| TXH | Anthem BCBS of Maine (ME) |
| TXI | Unassigned Prefix |
| TXJ | Anthem BCBS of Nevada (NV) |
| TXK | Unassigned Prefix |
| TXL | Anthem BCBS of Wisconsin (WI) |
| TXM | Anthem BCBS of Ohio (OH) |
| TXN | BCBS Blue Care Network Michigan (MI) |
| TXO | Unassigned Prefix |
| TXP | Premera BCBS of Alaska (AK) |
| TXQ | Unassigned Prefix |
| TXR | BCBS of Texas (TX) |
| TXS | BCBS of Texas (TX) |
| TXT | BCBS of Massachusetts (MA) |
| TXU | BCBS of Western New York (WNY) |
| TXV | BCBS of Tennessee (TN) |
| TXW | BCBS of Texas (TX) |
| TXX BCBS Prefix | BCBS of Massachusetts (MA) |
| TXY | Unassigned Prefix |
| TXZ | BCBS of Tennessee (TN) |
| TYA | Premera BCBS of Alaska (AK) |
| TYB | Blue shield(BS) of California (CA) |
| TYC | Anthem Blue Cross(BC) of California (CA) |
| TYD | Unassigned Prefix |
| TYE | Unassigned Prefix |
| TYF | Anthem BCBS of Ohio (OH) |
| TYG BCBS Prefix | Arkansas (AR) Blue Cross |
| TYH | Unassigned Prefix |
| TYI | Unassigned Prefix |
| TYJ | Unassigned Prefix |
| TYK | Anthem BCBS of Ohio (OH) |
| TYL | BCBS of Texas (TX) |
| TYM | Florida (FL) Blue |
| TYN | Horizon BCBS of New Jersey (NJ) |
| TYO | Blue shield(BS) of Northeastern New York (NeNY) |
| TYP | Wellmark |
| TYQ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TYR | Anthem BCBS of Missouri (MO) |
| TYS | Unassigned Prefix |
| TYT | BCBS of Illinois (IL) |
| TYU | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| TYV | Unassigned Prefix |
| TYW | BCBS of Arizona (AZ) |
| TYX | Unassigned Prefix |
| TYY | BCBS of Texas (TX) |
| TYZ | Arkansas (AR) Blue Cross |
| TZA | BCBS of Illinois (IL) |
| TZB | Highmark BCBS of Pennsylvania (PA) |
| TZC | Unassigned Prefix |
| TZD | Anthem BCBS of Ohio (OH) |
| TZE | BCBS of Illinois (IL) |
| TZF | Horizon BCBS of New Jersey (NJ) |
| TZG | Unassigned Prefix |
| TZH | Unassigned Prefix |
| TZI | BCBS of Tennessee (TN) |
| TZJ | BCBS of Illinois (IL) |
| TZK | Unassigned Prefix |
| TZL | Highmark BCBS of Pennsylvania (PA) |
| TZM | Anthem Blue Cross(BC) of California (CA) |
| TZN | Anthem BCBS of Ohio (OH) |
| TZO | Anthem BCBS of Georgia (GA) |
| TZP | Unassigned Prefix |
| TZQ | Anthem BCBS of Ohio (OH) |
| TZR | Unassigned Prefix |
| TZS | Premera BCBS of Alaska (AK) |
| TZT | Arkansas (AR) Blue Cross |
| TZU | Highmark BCBS of Pennsylvania (PA) |
| TZV | Anthem BCBS of Indiana (IN) |
| TZW | Highmark BCBS of Pennsylvania (PA) |
| TZX | Anthem BCBS of Colorado (CO) |
| TZY | Highmark BCBS of Pennsylvania (PA) |
| TZZ | Unassigned Prefix |
| |
