NumberResearchRecent prefix assignments
372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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, last 30 days
New assignments by month
Oct 2026
Sep 2026
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Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2018-02-28 | 579-442 | not yet reported which blocks → | Cooptel | 818D | Granby | — |
| 2018-02-28 | 581-763 | not yet reported which blocks → | Videotron Ltd. | 8306 | Disraeli | — |
| 2018-02-28 | 639-637 | not yet reported which blocks → | Iristel Inc. | 154E | Saskatoon | — |
| 2018-02-28 | 816-909 | 0XXX9XXX · 2 holders which blocks → | WINDSTREAM MISSOURI, INC. | 1885 | UNION STAR | MO |
| 2018-02-28 | 825-257 | not yet reported which blocks → | Iristel Inc. | 154E | Calgary | — |
| 2018-02-28 | 870-383 | 0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks → | WINDSTREAM ARKANSAS, INC. | 1691 | ELAINE | AR |
| 2018-02-28 | 870-393 | 0–9 XXXall 10 · 6 holders which blocks → | AIRUS, INC. - AR | 578H | JONESBORO | AR |
| 2018-02-27 | 216-238 | 0–9 XXXall 10 · 3 holders which blocks → | EXIANT COMMUNICATIONS LLC | 114J | CLEVELAND | OH |
| 2018-02-27 | 224-288 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BARRINGTON | IL |
| 2018-02-27 | 254-329 | 0–9 XXXall 10 · 4 holders which blocks → | WINDSTREAM SUGAR LAND, LLC | 2147 | COOLIDGE | TX |
| 2018-02-27 | 412-935 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2018-02-27 | 430-237 | 0–9 XXXall 10 · 4 holders which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | BECKVILLE | TX |
| 2018-02-27 | 430-238 | 0XXX1XXX2XXX6XXX8XXX9XXX · 6 holders which blocks → | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 1181 | DEPORT | TX |
| 2018-02-27 | 437-229 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-230 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-231 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-232 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-233 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-234 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-235 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-236 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-237 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-238 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-239 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-240 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-241 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-242 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-243 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-244 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-245 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-246 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-247 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-248 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-249 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 437-250 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-27 | 551-239 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - NJ | 637C | CLIFFSIDE | NJ |
| 2018-02-27 | 614-683 | 0–9 XXXall 10 · 3 holders which blocks → | EXIANT COMMUNICATIONS LLC | 114J | ALTON | OH |
| 2018-02-27 | 779-250 | 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | STERLING | IL |
| 2018-02-27 | 806-604 | 0XXX2XXX8XXX9XXX · 4 holders which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | PERRYTON | TX |
| 2018-02-27 | 806-608 | 2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | BOVINA | TX |
| 2018-02-27 | 806-613 | 9XXX which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | CLAUDE | TX |
| 2018-02-27 | 806-618 | 8XXX9XXX · 2 holders which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | HAPPY | TX |
| 2018-02-27 | 806-619 | 9XXX which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | PANHANDLE | TX |
| 2018-02-27 | 806-630 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | WOLFFORTH | TX |
| 2018-02-27 | 936-278 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | WINDSTREAM SUGAR LAND, LLC | 2147 | WATERWOOD | TX |
| 2018-02-27 | 936-279 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | WINDSTREAM SUGAR LAND, LLC | 2147 | GARRISON | TX |
| 2018-02-27 | 949-414 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IRVINE | CA |
| 2018-02-26 | 437-213 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-26 | 437-214 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2018-02-26 | 437-215 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.