Local Calling Guide
Area code/prefix search
Derby, IA
NPA-NXX | BLOCK | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|
641-533 | A | LEONIAXODS0 | 1888 GRAND RIVER MUTUAL TEL CO | 632 |
Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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