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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2026-05-12 | 548-740 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Listowel | — |
| 2026-04-29 | 548-745 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Ingersoll | — |
| 2026-03-30 | 548-744 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Tillsonburg | — |
| 2026-03-18 | 548-801 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Woodstock | — |
| 2026-03-18 | 548-802 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Stratford | — |
| 2026-03-18 | 548-821 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Orangeville | — |
| 2026-03-11 | 548-910 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Brantford | — |
| 2026-03-11 | 548-920 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | St. Thomas | — |
| 2026-02-27 | 548-861 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Kitchener-Waterloo | — |
| 2026-02-27 | 548-862 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | London | — |
| 2025-05-28 | 548-429 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Hillsburgh | — |
| 2025-02-18 | 548-466 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Sarnia | — |
| 2025-02-18 | 548-474 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Windsor | — |
| 2025-02-14 | 548-464 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Fergus | — |
| 2025-02-12 | 548-461 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Acton | — |
| 2024-12-27 | 548-465 | not yet reported which blocks → | Cogeco Connexion Inc. | 221K | Chatham | — |
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.