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 |
|---|---|---|---|---|---|---|
| 2020-05-05 | 548-994 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| 2019-11-12 | 548-989 | not yet reported which blocks → | TELUS Mobility | 646F | Guelph | — |
| 2019-11-12 | 548-990 | not yet reported which blocks → | TELUS Mobility | 646F | Kitchener-Waterloo | — |
| 2019-11-12 | 548-991 | not yet reported which blocks → | TELUS Mobility | 646F | London | — |
| 2019-11-12 | 548-992 | not yet reported which blocks → | TELUS Mobility | 646F | Stratford | — |
| 2019-11-12 | 548-993 | not yet reported which blocks → | TELUS Mobility | 646F | Windsor | — |
| 2017-11-07 | 548-995 | not yet reported which blocks → | TELUS Mobility | 8303 | Sarnia | — |
| 2017-09-28 | 548-996 | not yet reported which blocks → | TELUS Mobility | 8303 | Chatham | — |
| 2017-09-28 | 548-997 | not yet reported which blocks → | TELUS Mobility | 8303 | Sarnia | — |
| 2017-08-28 | 548-998 | not yet reported which blocks → | TELUS Mobility | 8303 | Tillsonburg | — |
| 2015-11-18 | 548-999 | not yet reported which blocks → | TELUS Mobility | 8303 | Brantford | — |
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.