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 |
|---|---|---|---|---|---|---|
| 2017-02-08 | 548-216 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| 2017-02-08 | 548-217 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| 2017-02-08 | 548-218 | not yet reported which blocks → | Bell Canada | 8051 | Galt | — |
| 2017-02-08 | 548-219 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| 2016-10-12 | 548-201 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| 2016-10-12 | 548-202 | not yet reported which blocks → | Bell Canada | 8051 | Clinton | — |
| 2016-10-12 | 548-203 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| 2016-10-12 | 548-204 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| 2016-10-12 | 548-205 | not yet reported which blocks → | Bell Canada | 8051 | St. Thomas | — |
| 2016-10-12 | 548-206 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| 2016-10-12 | 548-207 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| 2016-10-12 | 548-208 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| 2016-10-12 | 548-209 | not yet reported which blocks → | Bell Canada | 8051 | Guelph | — |
| 2016-10-12 | 548-210 | not yet reported which blocks → | Bell Canada | 8051 | Brantford | — |
| 2016-10-12 | 548-212 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| 2016-10-12 | 548-213 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| 2016-10-12 | 548-214 | not yet reported which blocks → | Bell Canada | 8051 | Simcoe | — |
| 2016-10-12 | 548-215 | not yet reported which blocks → | Bell Canada | 8051 | Stratford | — |
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.