Local Calling Guide
Area code/prefix search
NPA: 503 [Rate centres in NPA 503] [Dial plan for NPA 503]
NXX: 900
| NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
|---|---|---|---|---|---|---|---|---|---|
| 503-900 | A | Lyons | OR | PTLDORWAXKY | 936F ASTOUND BROADBAND, LLC - OR | 672 | |||
| 503-900 | 0 | Lyons | OR | PTLDORWAXKY | 936F ASTOUND BROADBAND, LLC - OR | 672 | 2009-08-03 | ||
| 503-900 | 1 | Lyons | OR | 145J TERRA NOVA TELECOM INC. | 672 | 2025-07-12 | |||
| 503-900 | 9 | Lyons | OR | PTLDORWAXKY | 936F ASTOUND BROADBAND, LLC - OR | 672 | 2010-04-17 |
Last updated: Sat, 15 Nov 2025 03:38:44 UTC
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