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 |
|---|---|---|---|---|---|---|
| 2013-02-25 | 579-226 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Therese | — |
| 2012-12-24 | 579-245 | not yet reported which blocks → | TELUS Quebec | 2243 | Saint-Liboire | — |
| 2012-12-24 | 579-246 | not yet reported which blocks → | TELUS Quebec | 2243 | Valcourt | — |
| 2012-12-24 | 579-247 | not yet reported which blocks → | TELUS Quebec | 2243 | Roxton Falls | — |
| 2012-10-24 | 579-227 | not yet reported which blocks → | TELUS Quebec | 2243 | Rigaud | — |
| 2012-10-24 | 579-228 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Rosalie | — |
| 2012-06-15 | 579-243 | not yet reported which blocks → | TELUS Quebec | 2243 | Sorel | — |
| 2012-06-15 | 579-244 | not yet reported which blocks → | TELUS Quebec | 2243 | Joliette | — |
| 2012-03-19 | 579-229 | not yet reported which blocks → | TELUS Quebec | 2243 | Beloeil | — |
| 2010-09-03 | 579-230 | not yet reported which blocks → | TELUS Quebec | 2243 | Boucherville | — |
| 2010-09-03 | 579-231 | not yet reported which blocks → | TELUS Quebec | 2243 | Chomedey | — |
| 2010-09-03 | 579-232 | not yet reported which blocks → | TELUS Quebec | 2243 | Granby | — |
| 2010-09-03 | 579-233 | not yet reported which blocks → | TELUS Quebec | 2243 | Le Gardeur | — |
| 2010-09-03 | 579-234 | not yet reported which blocks → | TELUS Quebec | 2243 | Longueuil | — |
| 2010-09-03 | 579-235 | not yet reported which blocks → | TELUS Quebec | 2243 | Mascouche | — |
| 2010-09-03 | 579-236 | not yet reported which blocks → | TELUS Quebec | 2243 | Pont-Viau | — |
| 2010-09-03 | 579-237 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Rose | — |
| 2010-09-03 | 579-238 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Therese | — |
| 2010-09-03 | 579-239 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Hyacinthe | — |
| 2010-09-03 | 579-240 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jerome | — |
| 2010-09-03 | 579-241 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Lambert | — |
| 2010-09-03 | 579-242 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Vincent-de-Paul | — |
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.