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 |
|---|---|---|---|---|---|---|
| 2008-10-30 | 775-737 | 0–9 XXXall 10 · 5 holders which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | RENO | NV |
| 2001-07-10 | 775-212 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | LUND | NV |
| 2001-07-10 | 775-214 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | LOVELOCK | NV |
| 2001-07-10 | 775-226 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | IMLAY | NV |
| 2001-07-10 | 775-228 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | HAWTHORNE | NV |
| 2001-07-10 | 775-231 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | FISHLK VLY | NV |
| 2001-07-10 | 775-270 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | EUREKA | NV |
| 2001-07-10 | 775-274 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | ELY | NV |
| 2001-07-10 | 775-279 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | BATTLE MT | NV |
| 2001-07-10 | 775-280 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | MCGILL | NV |
| 2001-07-10 | 775-281 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | CRESCNTVLY | NV |
| 2001-07-10 | 775-282 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | WINNEMUCCA | NV |
| 2001-07-10 | 775-286 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | SCHURZ | NV |
| 2001-07-10 | 775-290 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | MINA | NV |
| 2001-07-10 | 775-308 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | BAKER | NV |
| 2001-05-23 | 775-222 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | CARSONCITY | NV |
| — | 775-207 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | YERINGTON | NV |
| — | 775-215 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | GARDNERVL | NV |
| — | 775-216 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | SMITH VLY | NV |
| — | 775-236 | not yet reported which blocks → | UTILITY TELECOM GROUP, LLC - NV | 811D | RENO | NV |
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.