🔎 Tip: Click any Company, OCN, Rate Center, or CLLI to explore related telecom data
| npa-nxx | State/Province | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 803-401 | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401 is split into 1,000-number blocks - detail below | |||||||||
| 803-401-0XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401-1XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401-2XXX | SC | ONVOY SPECTRUM, LLC (Sinch) | 0024415002 | RMD0002045 | 624H | COLUMBIA | CLMASCSN25Z | 05/25/2022 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN25Z)) |
| 803-401-3XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401-4XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401-5XXX | SC | AT&T ENTERPRISES, LLC (AT&T) | 0035146430 | RMD0022433 | 516C | COLUMBIA | NOCLLIKNOWN | 08/03/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 803-401-6XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401-7XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) | |
| 803-401-8XXX | SC | ONVOY, LLC - SC (Sinch) | 0004323028 | RMD0001966 | 548E | COLUMBIA | NOCLLIKNOWN | 12/12/2025 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 803-401-9XXX | SC | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (Bellsouth) | N/A | 9417 | COLUMBIA | CLMASCSN79F | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSN79F)) |