| DAM DAU DAV DBB DBD DBJ DBN DBP DBQ DBS DBZ DCI DCJ DCK DCO DCU DCY DDC DDD DDE DDI DDQ DDR DDU DDW DDX DEV DEW DEZ DFD DFE DFF DFH DFJ DFL DFU DFW DGH DGM DGZ DHQ DHR DHZ DIC DIG DIJ DIM DIN DIU DIX DJC DJE DJG DJS DJT DJU DJY DKB DKG DKL DKN DKU DKX DLC DLF DLS DLW DLY DMB DMF DMJ DMK DMS DMU DNA DNJ DNK DNP DNU DNY DOO DOR DOT DPH DPJ DPK DPL DPN DPQ DPV DPX DPZ DQE DQF DQK DQQ DQR DQU DQV DQW DQX DQZ DRK DRL DRP DRQ DRS DRT DSA DSC DSG DSL DSN DSO DSV DTG DTI DTP DTQ DTR DTS DTX DUI DUT DVE DVK DVL DVO DVQ DVT DVV DVW DVY DWH DWJ DWV DWW DWX DWZ DXI DXJ DXL DXO DXT DXV DYB DYH DYI DYJ DYN DYR DYZ DZF DZL DZR DZS DZU DZY | Alpha Prefix not assigned or unallocated |
| DQJ DUS | Anthem Blue Cross Blue Shield of Colorado |
| DET DTN DTU DTY | Anthem Blue Cross Blue Shield of Connecticut |
| DJI DOM DSU DTW DZE | Anthem Blue Cross Blue Shield of Georgia |
| DEE DEQ DOE DRY DVA | Anthem Blue Cross Blue Shield of Indiana |
| DBA DHA | Anthem Blue Cross Blue Shield of Kentucky |
| DBI DCA DEU DHG DPP DRU DSE DXB DZK | Anthem Blue Cross Blue Shield of Missouri |
| DDP | Anthem Blue Cross Blue Shield of New Hampshire |
| DAO DAY DBE DBF DBG DCB DDS DFQ DFZ DHD DHH DHJ DHL DLB DLV DNZ DOY DSQ DTE DWY DYY DZN DZV | Anthem Blue Cross Blue Shield of Ohio |
| DRZ DSS DTJ DXM | Anthem Blue Cross Blue Shield of Virginia |
| DDF DLN DQS DQT DRA DSP DTM DVF DVM DYQ DYV | Anthem Blue Cross Blue Shield of Wisconsin |
| DAH DEB DEL DEP DGA DJB DJV DKZ DLD DLI DLQ DLU DPA DPI DPS DQA DRD DRG DVN DXC DYS DYT | Anthem Bluecross of California |
| DBL DCX DGL DGU DHC DIR DNX DPF DRB DRX DUN DXY DYX DZJ | Blue Cross Blue Shield of Alabama |
| DAD DAX DCP DDZ DEA DEF DEY DFC DFS DFV DHW DKK DLT DLX DMA DME DMV DMY DPM DQC DRV DSK DST DTH DTV DUR DVG DVR DWF DWP DYE DYF | Blue Cross Blue Shield of Illinois |
| DUX | Blue Cross Blue Shield of Kansas |
| DFA DHS DIF DMG DSW DSY DXW | Blue Cross Blue Shield of Kansas City |
| DDN DDO DIP DJO DQD DVC | Blue Cross Blue Shield of Louisiana |
| DAI DAK DBX DGJ DHN DIY DMN DMT DNH DRC DUH DXU DZX | Blue Cross Blue Shield of Massachusetts |
| DAB DBT DBV DBW DCC DCH DDJ DDY DEH DEI DEK DEM DES DFK DGO DGP DGY DHE DHM DKM DKP DKS DLO DMH DMM DNO DNW DOC DOF DOP DOS DOU DPR DPU DSH DTO DTZ DUA DUB DUF DUQ DUU DUW DUY DVP DWA DWM DXG DXP DYG DYM DZW | Blue Cross Blue Shield of Michigan |
| DAR DBY DDM DEX DJR DJX DKR DML DON DRF DUL DWT DXX DYA DZM DZP DZT | Blue Cross Blue Shield of Minnesota |
| DCN DEC DLR DMC DPD DTD | Blue Cross Blue Shield of Nebraska |
| DHU DKE DKH DKY DPO DRI DRJ DUZ DWB | Blue Cross Blue Shield of North Carolina |
| DSZ | Blue Cross Blue Shield of North Dakota |
| DAG DBR DGB DII DIQ DKF DKO DKQ DMI DNE DNM DOH DOI DVZ | Blue Cross Blue Shield of South Carolina |
| DBC DCL DCR DDB DDV DEG DFP DGI DGN DGQ DGS DGT DGW DHK DID DIV DLG DLH DLZ DUC DZO DZZ | Blue Cross Blue Shield of Tennessee |
| DAL DAT DCV DDG DER DFT DFY DJM DNB DNL DNN DPW DRE DXE DXN | Blue Cross Blue Shield of Texas |
| DMR DQN DWG DZD | Blue Cross Blue Shield of Western New York |
| DGD DLE DLJ DMX | Bluecross of Idaho |
| DDT DEJ DEO DFO DGC DGF DIT DJN DJW DND DQI DSF DWE | Blueshield of California |
| DDL DHI DKJ DLK DNT | Capital Bluecross of Pennsylvania |
| DAC DAN DAQ DBU DCE DCF DFM DGX DHO DHX DJK DJP DJZ DKC DLP DMD DNG DNQ DNS DOB DOG DOQ DOV DOZ DPY DQL DQO DQP DQY DRN DRR DSD DSJ DTA DTC DTF DTL DTT DUD DUO DVD DVH DVI DVX DWC DWI DWL DWO DWQ DWR DXA DXD DXH DXZ DYK DYO DYP DZB DZI DZQ | Carefirst Blue Cross Blue Shield(Maryland/District of Columbia/Northern Virginia) |
| DHB DHF DHY DIW DJL DMQ DPE DVB DZA DZG | Empire Blue Cross Blue Shield of New York |
| DHP | Excellus Blue Cross Blue Shield of New York |
| DDA DFN DFX DGK DIO DJD DJQ DNI DOD DOJ DOW DPB DUE DUV DWD DYC DYD | Florida Blue |
| DPT DQM DSR DUP DYW | Highmark Blue Cross Blue Shield of Delaware |
| DBM DCD DCM DDK DIE DIH DIK DLM DNR DNV DRM DVS DYL DZH | Highmark Blue Cross Blue Shield of Pennsylvania |
| DCW DJF DJJ DMP DSX DTB DUG DWK DXR DYU | Horizon Blue Cross Blue Shield of New Jersey |
| DAZ DBO DED DFB DFI DGR DIS DKV DMO DPC DRH DSI DUJ DUK DVU DWU DXF | Independence Bluecross of Philadelphia and Southeastern Pennsylvania |
| DBH DEN DXK | Premera Blue Cross Blue Shield of Alaska |
| DAA DCZ DGG DHT DJA DSM DTK DWN | Regence Blue Cross Blue Shield(Oregon/Idaho/Utah/Washington) |
| DAE DAF DAJ DAP DAS DAW DBK DCG DCQ DCS DCT DDH DFG DFR DGE DGV DHV DIA DIB DIL DIZ DJH DKA DKD DKI DKT DKW DLA DLL DMW DMZ DNC DNF DOA DOK DOL DOX DPG DQB DQG DQH DRO DRW DSB DUM DVJ DWS DXQ DXS DZC | Wellmark Blue Cross Blue Shield of South Dakota/Iowa |