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 403
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 403-206 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-207 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-208 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-209 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-210 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-212 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-213 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-214 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-215 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-216 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-217 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-218 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-219 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-220 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-221 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-222 | not yet reported which blocks → | TELUS | 8084 | Wrentham | — |
| — | 403-223 | not yet reported which blocks → | TELUS | 8084 | Taber | — |
| — | 403-224 | not yet reported which blocks → | TELUS | 8084 | Bowden | — |
| — | 403-225 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-226 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-227 | not yet reported which blocks → | TELUS | 8084 | Innisfail | — |
| — | 403-228 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-229 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-230 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-231 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-232 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-233 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-234 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-235 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-236 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-237 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-238 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-239 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-240 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-241 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-242 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-243 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-244 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-245 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-246 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-247 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-248 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-249 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-250 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-251 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-252 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-253 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-254 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-255 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-256 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
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.