Local Calling Guide
Area code/prefix search
NPA: 447 [Rate centres in NPA 447] [Dial plan for NPA 447]
NXX: 257
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
447-257 | A | Mason City | IL | SPFDILES7MD | 224C ONVOY, LLC | 374 | |||
447-257 | 0 | Mason City | IL | SPFDILESXYX | 495J STRATUS NETWORKS | 374 | 2021-12-13 | ||
447-257 | 1 | Mason City | IL | SPFDILMBWMD | 073H TELNYX LLC | 374 | 2023-11-16 | ||
447-257 | 4 | Mason City | IL | SPFDILES7MD | 224C ONVOY, LLC | 374 | 2021-06-25 | ||
447-257 | 7 | Mason City | IL | SPFDILES7MD | 224C ONVOY, LLC | 374 | 2021-08-01 | ||
447-257 | 9 | Mason City | IL | SPFDILESX8Y | 490J DISH WIRELESS, LLC | 374 | 2023-11-13 |
Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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