NumberResearchRecent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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
Sep 2026
Aug 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-08-02 | 249-330 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Cannington | — |
| 2017-08-02 | 249-331 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Coboconk | — |
| 2017-08-02 | 249-333 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Kirkfield | — |
| 2017-08-02 | 249-334 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Apsley | — |
| 2017-08-02 | 249-335 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bethany | — |
| 2017-08-02 | 249-336 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bridgenorth | — |
| 2017-08-02 | 249-337 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Buckhorn | — |
| 2017-08-02 | 249-339 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Campbellford | — |
| 2017-08-02 | 249-340 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Hastings | — |
| 2017-08-02 | 249-341 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Havelock | — |
| 2017-08-02 | 249-933 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Fenelon Falls | — |
| 2017-08-02 | 249-934 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Beaverton | — |
| 2017-08-02 | 406-561 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | BILLINGS | MT |
| 2017-08-02 | 437-550 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2017-08-02 | 437-850 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2017-08-02 | 438-550 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2017-08-02 | 438-850 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2017-08-02 | 440-517 | 0–9 XXXall 10 · 5 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | AVON | OH |
| 2017-08-02 | 518-646 | 0–9 XXXall 10 · 5 holders which blocks → | VONAGE AMERICA LLC | 197D | ALBANY | NY |
| 2017-08-02 | 571-361 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MANASSAS | VA |
| 2017-08-02 | 605-410 | 0XXX5XXX · 2 holders which blocks → | MIDCONTINENT COMMUNICATIONS. - SD | 7076 | IPSWICH | SD |
| 2017-08-02 | 716-277 | 0–9 XXXall 10 · 2 holders which blocks → | VONAGE AMERICA LLC | 197D | BUFFALO | NY |
| 2017-08-02 | 825-580 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2017-08-02 | 825-588 | not yet reported which blocks → | TELUS Mobility | 8301 | Edmonton | — |
| 2017-08-02 | 838-200 | 0–9 XXXall 10 · 4 holders which blocks → | TVC ALBANY, INC. DBA FIRSTLIGHT FIBER | 7989 | ALBANY | NY |
| 2017-08-02 | 984-287 | 0–9 XXXall 10 · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | DURHAM | NC |
| 2017-08-01 | 201-551 | 0–9 XXXall 10 · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | JERSEYCITY | NJ |
| 2017-08-01 | 325-225 | 0–9 XXXall 10 · 6 holders which blocks → | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 1181 | CLYDE | TX |
| 2017-08-01 | 405-746 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | SEMINOLE | OK |
| 2017-08-01 | 575-552 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - NM | 206F | HOBBS | NM |
| 2017-08-01 | 639-323 | not yet reported which blocks → | Bell Mobility | 6574 | Cabri | — |
| 2017-08-01 | 639-324 | not yet reported which blocks → | Bell Mobility | 6574 | Central Butte | — |
| 2017-08-01 | 661-405 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LANCASTER | CA |
| 2017-08-01 | 719-341 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | ALAMOSA | CO |
| 2017-08-01 | 719-733 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | PUEBLO | CO |
| 2017-08-01 | 806-405 | 0XXX1XXX2XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | LAMESA | TX |
| 2017-08-01 | 870-205 | 0–9 XXXall 10 · 5 holders which blocks → | E. RITTER COMMUNICATIONS, LLC | 128L | PARAGOULD | AR |
| 2017-08-01 | 979-205 | 0–9 XXXall 10 · 5 holders which blocks → | WINDSTREAM SUGAR LAND, LLC | 2147 | SWEENY | TX |
| 2017-07-31 | 312-581 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN01 | IL |
| 2017-07-31 | 431-541 | not yet reported which blocks → | Bell Mobility | 6574 | Brandon | — |
| 2017-07-31 | 571-324 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HERNDON | VA |
| 2017-07-31 | 581-775 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Methode-de-Frontenac | — |
| 2017-07-31 | 581-776 | not yet reported which blocks → | Videotron Ltd. | 8306 | Saint-Magloire | — |
| 2017-07-31 | 587-942 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2017-07-31 | 720-602 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2017-07-31 | 916-301 | 0–9 XXXall 10 · 4 holders which blocks → | ASTOUND BROADBAND, LLC - CA | 485E | RSVL CTHT | CA |
| 2017-07-28 | 213-302 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | LSAN DA 10 | CA |
| 2017-07-28 | 518-617 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | CAIRO | NY |
| 2017-07-28 | 603-299 | 9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BARTLETT | NH |
| 2017-07-28 | 626-366 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.