NumberResearchRecent prefix assignments
372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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, last 30 days
New assignments by month
Oct 2026
Sep 2026
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Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 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 | — |
| — | 519-529 | not yet reported which blocks → | Huron Telecommunications Co-operative Ltd. | 8215 | Dungannon | — |
| — | 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 | — |
| — | 519-562 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Windsor | — |
| — | 519-563 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-564 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| — | 519-565 | not yet reported which blocks → | Tuckersmith Communications Co-operative Ltd. | 8240 | Bayfield | — |
| — | 519-566 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Windsor | — |
| — | 519-567 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | 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 | — |
| — | 519-572 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| — | 519-573 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| — | 519-574 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | 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 | — |
| — | 519-577 | not yet reported which blocks → | Bell Mobility | 6574 | 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 | — |
| — | 519-580 | not yet reported which blocks → | Bell Mobility | 6574 | 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 | — |
| — | 519-588 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| — | 519-589 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| — | 519-590 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| — | 519-592 | not yet reported which blocks → | Persona Communications Inc. | 8202 | Stokes Bay | — |
| — | 519-595 | not yet reported which blocks → | Mornington Communications Co-operative Ltd. | 8223 | Milverton | — |
| — | 519-596 | not yet reported which blocks → | Persona Communications Inc. | 8202 | Tobermory | — |
| — | 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 | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.