🔎 Tip: Click any Company, OCN, Rate Center, or CLLI to explore related telecom data
| npa-nxx | State | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 502-743 | KY | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (Bellsouth) | N/A | 9419 | SULPHUR | SLPHKYMADS1 | 00/00/0000 | Prefix Type: RBOC Switch Name: SULPHUR Switch Type: Northern Telecom Remote Switching Center LATA: Louisville KY (462) Tandem: N/A 🔧 Explore Switch(CLLI: SLPHKYMADS1)) | |
| 502-743 is split into 1,000-number blocks - detail below | |||||||||
| 502-743-0XXX | KY | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (Bellsouth) | N/A | 9419 | SULPHUR | SLPHKYMADS1 | N/A | Prefix Type: RBOC Switch Name: SULPHUR Switch Type: Northern Telecom Remote Switching Center LATA: Louisville KY (462) Tandem: N/A 🔧 Explore Switch(CLLI: SLPHKYMADS1)) | |
| 502-743-5XXX | KY | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (Bellsouth) | N/A | 9419 | SULPHUR | SLPHKYMADS1 | N/A | Prefix Type: RBOC Switch Name: SULPHUR Switch Type: Northern Telecom Remote Switching Center LATA: Louisville KY (462) Tandem: N/A 🔧 Explore Switch(CLLI: SLPHKYMADS1)) | |
| 502-743-9XXX | KY | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (Bellsouth) | N/A | 9419 | SULPHUR | SLPHKYMADS1 | N/A | Prefix Type: RBOC Switch Name: SULPHUR Switch Type: Northern Telecom Remote Switching Center LATA: Louisville KY (462) Tandem: N/A 🔧 Explore Switch(CLLI: SLPHKYMADS1)) |