| AAM01 - Alascom |
| ABC01 - Corporate Image |
| AC*** - Mcleod USA / Paetec |
| AET01 - Logix |
| ALN01 - Global Crossing |
| AM*** - SBC |
| AON01 - Amrigon |
| APV01 - CSF Corp |
| ASL01 - American Long Lines |
| ATX** - AT&T |
| AU*** - ATL |
| AWLD1 - SBC |
| AYL01 - Interactive Audio |
| AZC01 - Home / Allstream |
| BBT01 - Toll-Less.com |
| BCU** - Bellsouth |
| BELLA - Verizon |
| BFN01 - Big River Telephone |
| BGE01 - Business Edge |
| BJC01 - Broadview Networks |
| BKD01 - Capsule/Covista |
| BLT01 - Telcordia Technologies |
| BNT01 - First Communications |
| BOV01 - Tone Networks |
| BQT01 - BTI |
| BRSAC - SMS/800 |
| BS*** - Bellsouth |
| BT*** - ITC Deltacom |
| BVE01 - Beehive Telephone |
| BWI01 - Bridgecom |
| BYS01 - Bay Star |
| BZY01 - Mcleod USA / Paetec |
| CED01 - RCN |
| CGI01 - CommuniGroup |
| CIO01 - Net Options |
| CJI01 - Cooperative |
| CKC01 - CGI LD |
| CMT01 - Acceris |
| CNM01 - Bell Canada |
| CZT01 - CYTEL |
| DAB01 - ATX |
| DBC01 - Broadwing |
| DDC01 - Nuvox |
| DIC01 - Direct Connect |
| DJK01 - TransNational (TNCI) |
| DKT01 - Andiamo Telecom |
| DLP01 - Dial 800 |
| DMZ01 - Callipso |
| DPT01 - Adeptel |
| DQP01 - Telecon |
| DSI01 - DSI |
| DTI01 - DTI |
| DUN01 - TalkPath, LLC |
| DVC01 - HelloCom Inc |
| DWN01 - Dow Networks |
| DXS01 - AT&T (Local) |
| EBO01 - Toll Free Express |
| EDS01 - LDDS Metromedia (MCI) |
| EET01 - Advanced Tel |
| EFJ01 - E-responses |
| EGI01 - Access Point |
| EHT01 - Access Point |
| EIX01 - NetTronix Choice |
| EJT01 - Eureka GGN |
| EKL01 - Phone People |
| ELT01 - Excel/Vartec |
| ENE01 - Earnware |
| EOT01 - ET&T |
| EQC01 - Executive Conf |
| ESM01 - Global Crossing |
| ETS01 - Capital Telecom |
| EU*** - Telus |
| EVW01 - Cablevision Lightpath |
| FAM** FCC** - Full Service Network |
| FDN01 - FDN Comm. |
| FEL01 - Birch Telecom |
| FGC01 - Focal Com |
| FHT01 - Telecard |
| FJT01 - First Digital Telecom |
| FKC01 - Carrier Network Serv. |
| FLX01 - Citizens |
| FMP01 - NuVox |
| FNA01 - Futuredontics |
| FON01 - Xpedite |
| FST01 - Birch Telecom |
| FUL01 - Full Spectrum |
| FWE01 - Shoct |
| FYI01 - BBCOM |
| GCI01 - GCI |
| GDG01 - Red River Network |
| GFF01 - Teledata Solutions |
| GHI01 - Unipoint Services |
| GIC01 - Teleglobe |
| GKL01 - Grand Circle Travel |
| GMM01 - Globalcom |
| GRP01 - Alliance Group |
| GT*** - Verizon |
| GWI01 - Telcom21 |
| GYC01 - Ring9 Inc |
| GZT01 - First World |
| HAP01 - Premiere Network |
| HBN01 - HBNet |
| HCN01 - National Comtel |
| HDS01 - Line Systems |
| HER01 - Cavalier Telephone |
| HFG01 - NOCARD Communications Corp |
| HHG01 - Callcast |
| HJK01 - Hickory Tech |
| HLK01 - Unilink Telcom |
| HMM01 - Epana Networks |
| HOT01 - Sigecom |
| HQH01 - Rolinium |
| HRH01 - Rolinium #2 |
| HVN01 - Dial-Around Telecom |
| HWK01 - NCIC |
| HXT01 - Hawaiian Telcom |
| HYT01 - Allergan Sales LLC |
| IBC01 - XO |
| IEO01 - iBasis |
| IJK01 - Paymentech |
| ILD01 - IDS LD |
| IM*** - Integra Telecom |
| INF01 - Time Warner |
| IOW01 - Iowa Communications |
| IPT01 - Total Call International Inc |
| ISV01 - Iowa Network Svcs |
| IUX01 - XO |
| IWL01 - Broadwing |
| IYM01 - Intelemedia |
| IZC01 - Broadwing |
| JCI01 - Norlight |
| JEK01 - Allegiance |
| JFX01 - TimeShift |
| JGL01 - 24-7-365, Inc. |
| JHT01 - Next-G Comm |
| JJJ01 - LT Baroda |
| JON01 - 800 Ideas |
| JRC01 - IT Connect |
| JSS01 - Telcove |
| JUI01 - Dollar Phone Access Inc |
| JWS01 - PrimeTel2 |
| JYT01 - 8 X 8 Communications |
| JYT01 - Bandwidth - One Pipe |
| JZZ01 - Amtec |
| KAT01 - TCAST |
| KBT01 - Airespring |
| KFV01 - World One Telecom |
| KIS01 - Transaction Network |
| KMT01 - Network Mgmt |
| KOK01 - Soutine |
| KPK01 - Telrite Corporation |
| KRY01 - Gafachi |
| KSW** - WilTel |
| KTY01 - Lightyear |
| KWN01 - Grande |
| KYT01 - Premiere Conf. |
| KZA01 - Legacy Long Dist. |
| LCT01 - Consolidated |
| LDD** - MCI |
| LGT01 - Qwest |
| LHS01 - Lightship |
| LIC01 - POPP Com |
| LJK01 - LataOne Inc |
| LKS01 - Locus Telecom |
| LMI01 - LDMI |
| LOD01 - Cinergy |
| LPS01 - 800 Response |
| LQE01 - Level 3 |
| LXC01 - Linx Comm. |
| LYX01 - Lynx Telecom |
| LZO01 - LD Billing |
| MCI01 - MCI |
| MET01 - MetTel |
| MGC01 - Telecom Analytics |
| MHT01 - Winstar |
| MJC01 - Micktel Corp |
| MKN01 - Micronesian |
| MLK01 - Cricket Communications |
| MNS01 - CMS |
| MOT01 - Monmouth Telecom |
| MPC01 - Mpower |
| MQX01 - Misc-Etc |
| MRG01 - Mirage |
| MTI01 - Siouxland |
| MUI01 - Sierra |
| MXT01 - Amax Two |
| MYR01 - Mayfair (Primetel 3) |
| NCM01 - NTS |
| NKT01 - XO |
| NPH01 - Bestline |
| NRC01 - NOS |
| NSI01 - Navigata |
| NXNY* - Verizon |
| OAK01 - On-Call Resp Org Svcs |
| OCC01 - One Call |
| OET01 - ITS |
| OFT01 - Intermetro |
| OJB01 - Cbeyond |
| OKB01 - ATG |
| OOZ01 - Zone Telecom |
| OPS01 - Switching Sol. |
| ORN01 - Orion Telecom |
| OSG01 - GoSolo |
| OTT01 - Connectto |
| OUR01 - CallSource |
| OWL01 - CNE Telecommunication |
| OYL01 - FSC |
| PBQ01 - Primus Canada |
| PC*** - SBC |
| PEN01 - XO |
| PFC01 - The Phone Co. |
| PGN01 - PNG |
| PIT01 - PrimeTel |
| PJK01 - Pacific Telecom |
| PKC** - Paetec |
| PLG01 - Pilgrim |
| PMI01 - WEPS |
| POT01 - PT-1 |
| PQC01 - Voicecom |
| PRT01 - PR Telephone |
| PSS01 - Pacific Centrex |
| PUI01 - Phone USA |
| PWT01 - Pac-West |
| PZC01 - Telepacific |
| QCU01 - Quebec Tel |
| QEQ01 - Cox Telecom |
| QKB01 - Convergia |
| QNE01 - Phoenix Teleport |
| QQA01 - TMC Communications |
| QRS01 - Globatron |
| QST01 - Questar |
| QTY01 - Southern Telecom |
| QVF01 - Teleperformance Interactive |
| QXP01 - ClearEnd |
| QYR01- 8 X 8 Communications |
| QZA01 - 1-800 MARKETER |
| RAC01 - Choice One |
| RBI01 - Ring Central |
| RC*** - Global Crossing |
| RHL01 - RespOrg Solution |
| RHL06 - Bluetone TF |
| RJT01 - RNK Telecom |
| RMI01 - ILD Telecom |
| RNI01 - RCC Network |
| ROL01 - Rolinium |
| RPT01 - Telescan |
| RRC01 - Remi |
| RSA01 - AccessLine |
| RTI01 - Point Telecom |
| RUC01 - WW Telegraph |
| RVE01 - Freedom Voice Systems |
| RWL01 - R W Lynch |
| RXD01 - I-Element |
| RYT01 - Brand 800 |
| SCT01 - Switch 2000 |
| SDR01 - Global Crossing |
| SEM01 - Selective Media |
| SFI01 - State Farm |
| SGI01 - Scherers |
| SH*** - ITC Deltacom |
| SJS01 - Startec |
| SN*** - SBC |
| SOE01 - Signal One |
| SP*** - Sprint |
| SQC01 - Info Telco |
| SRC01 - Global Crossing |
| SSI01 - TecNet |
| SUN01 - Suntel Metro |
| SVS01 - Access Services |
| SYS01 - Cordia |
| TDC01 - Ice Net |
| TFC01 - Telefonica |
| TGN** - Powercom |
| THA01 - Touch America |
| TIN01 - Primus |
| TJC01 - TeleServices |
| TNT01 - TelAmerica |
| TOT01 - Covista |
| TSH01 - Telcom Affiliates |
| TTH01 - Birch Telecom |
| TU*** - eMeritus |
| TUI01 - Excel Telecommunications |
| TVQ01 - TeleQuest |
| TXP01 - Telephone Express |
| UCW01 - Capsule |
| UDI01 - Lightyear |
| UEC01 - US Lec |
| UFO01 - Telesmart |
| UGO01 - Auris Tech |
| UHC01 - VeriSign |
| UKO01 - Qwest |
| UMS01 - Union Telephone |
| USL01 - TDS Metrocom |
| UUS01 - Choice One |
| UW*** - Qwest |
| UXC01 - Allstream |
| UYT01 - Ultrachat |
| UZL01 - Uni-Tel |
| VAN01 - Vanity Intl. |
| VBY01 - V3 Global |
| VCC01 - VoCall |
| VDL01 - Birch Telecom |
| VGF01 - RespOrg USA Inc. |
| VJC01 - Custom Teleconnect |
| VLK01 - Birch Telecom |
| VML01 - GotVMail |
| VPT01 - Voice Power |
| VRT01 - EN/index.asp VarTec |
| VST01 - CapTel |
| VUE01 - XO |
| VXML1 - Voxeo |
| VZR01 - Verizon |
| WBK01 - DCI |
| WCU01 - Global Crossing |
| WDE01 - Nation Wide 800 |
| WES01 - Who's Calling |
| WIL01 - MCI Wholesale |
| WKE01 - Granite Telecom |
| WLS01 - Wholesale Carrier Services, Inc |
| WNM01 - Warning |
| WOM01 - Word of Mouth |
| WST01 - Acceris |
| WUP01 - Wake Up |
| WWT01 - ANPI |
| WXI01 - WCI |
| XQG01 - |
| XQG10-15 - |
| YES01 - MGC |
| YGW01 - Gabriel |
| YHN01 - CSF Corporation |
| YOU01 - Telco Group |
| YRW01 - ICS |
| YSG01 - McLeod USA |
| YUI01 - Nobel Tel |
| YXT01 - Texas Comm. |
| ZNS01 - Z-Tel |
| ZTEST - SMS/800 |
| ZXS01 - Toll Xchange |
| ZXS20 - 800 Toll Free Now |