NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
Most active assignees, all time — NPA 519
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 519-523 | not yet reported which blocks → | Bell Canada | 8051 | Blyth | — |
| — | 519-524 | not yet reported which blocks → | Bell Canada | 8051 | Goderich | — |
| — | 519-525 | not yet reported which blocks → | Bell Canada | 8051 | Goderich | — |
| — | 519-526 | not yet reported which blocks → | Bell Canada | 8051 | Auburn | — |
| — | 519-527 | not yet reported which blocks → | Bell Canada | 8051 | Seaforth | — |
| — | 519-528 | not yet reported which blocks → | Bell Canada | 8051 | Lucknow | — |
| — | 519-533 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| — | 519-534 | not yet reported which blocks → | Bell Canada | 8051 | Wiarton | — |
| — | 519-535 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| — | 519-536 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| — | 519-537 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| — | 519-538 | not yet reported which blocks → | Bell Canada | 8051 | Meaford | — |
| — | 519-539 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| — | 519-541 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 519-542 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 519-561 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-563 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-569 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-570 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-571 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-575 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-576 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-578 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-579 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-581 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-582 | not yet reported which blocks → | Bell Canada | 8051 | Delhi | — |
| — | 519-583 | not yet reported which blocks → | Bell Canada | 8051 | Port Dover | — |
| — | 519-584 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-585 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| — | 519-586 | not yet reported which blocks → | Bell Canada | 8051 | Port Rowan | — |
| — | 519-587 | not yet reported which blocks → | Bell Canada | 8051 | Jarvis | — |
| — | 519-599 | not yet reported which blocks → | Bell Canada | 8051 | Thornbury | — |
| — | 519-620 | not yet reported which blocks → | Bell Canada | 8051 | Galt | — |
| — | 519-621 | not yet reported which blocks → | Bell Canada | 8051 | Galt | — |
| — | 519-622 | not yet reported which blocks → | Bell Canada | 8051 | Galt | — |
| — | 519-623 | not yet reported which blocks → | Bell Canada | 8051 | Galt | — |
| — | 519-624 | not yet reported which blocks → | Bell Canada | 8051 | Galt | — |
| — | 519-625 | not yet reported which blocks → | Bell Canada | 8051 | Shakespeare | — |
| — | 519-627 | not yet reported which blocks → | Bell Canada | 8051 | Wallaceburg | — |
| — | 519-628 | not yet reported which blocks → | Bell Canada | 8051 | Wallaceburg | — |
| — | 519-631 | not yet reported which blocks → | Bell Canada | 8051 | St. Thomas | — |
| — | 519-632 | not yet reported which blocks → | Bell Canada | 8051 | Ayr | — |
| — | 519-633 | not yet reported which blocks → | Bell Canada | 8051 | St. Thomas | — |
| — | 519-634 | not yet reported which blocks → | Bell Canada | 8051 | Baden | — |
| — | 519-637 | not yet reported which blocks → | Bell Canada | 8051 | St. Thomas | — |
| — | 519-638 | not yet reported which blocks → | Bell Canada | 8051 | Drayton | — |
| — | 519-640 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-641 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-642 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-643 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.