You are reviewing the Area Code (NPA/NXX) report for 531-428. Did you mean to search the SMS short code 531428?
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| Raw Number | 531428 |
| Basic Format | 531-428 |
| NPA (Area Code) | 531 |
| NXX | 428 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date | Block Available Date |
|---|---|---|---|---|---|---|---|---|---|---|
| 531-428-0XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-1XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-2XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-3XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-4XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-5XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-6XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-7XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-8XXX | 7421 | AT&T - LOCAL | ALLEN | AV | ALLEN | NE | WE | 12/15/2025 | ||
| 531-428-9XXX | 7421 | AT&T - LOCAL | ALLEN | AS | 09/12/2025 | ALLEN | NE | WE | 11/07/2025 | |
| 531-428-XXXX | 7421 | AT&T - LOCAL | ALLEN | AS | 09/12/2025 | ALLEN | NE |
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