Local Calling Guide
Area code/prefix search
NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]
NXX: 431
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
231-431 | A | Clam River | MI | GDRPMIBL36Z | 624H ONVOY SPECTRUM, LLC | 348 | 2021-07-23 | ||
231-431 | 0 | Clam River | MI | 991E BANDWIDTH.COM CLEC, LLC - MI | 348 | 2021-08-23 | |||
231-431 | 2 | Clam River | MI | 506J TWILIO INTERNATIONAL INC | 348 | 2021-07-26 | |||
231-431 | 3 | Clam River | MI | 543C ONVOY, LLCV - MI | 348 | 2021-07-24 | |||
231-431 | 4 | Clam River | MI | 543C ONVOY, LLCV - MI | 348 | 2022-03-04 | |||
231-431 | 5 | Clam River | MI | 543C ONVOY, LLCV - MI | 348 | 2021-09-10 | |||
231-431 | 7 | Clam River | MI | 516J TON80 COMMUNICATIONS LLC | 348 | 2021-11-06 |
Last updated: Fri, 01 Jul 2022 02:53:40 UTC
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