NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2010-09-07 | 608-520 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - WI | 007F | MADISON | WI |
| 2010-09-07 | 647-877 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Toronto | — |
| 2010-09-07 | 647-879 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Toronto | — |
| 2010-09-07 | 806-800 | 0XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | VEXUS | 4913 | WILSON | TX |
| 2010-09-07 | 832-800 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BAMMEL | TX |
| 2010-09-07 | 936-666 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TX | 004F | WILLIS | TX |
| 2010-09-03 | 510-516 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | FRNK MAIN | CA |
| 2010-09-03 | 579-230 | not yet reported which blocks → | TELUS Quebec | 2243 | Boucherville | — |
| 2010-09-03 | 579-231 | not yet reported which blocks → | TELUS Quebec | 2243 | Chomedey | — |
| 2010-09-03 | 579-232 | not yet reported which blocks → | TELUS Quebec | 2243 | Granby | — |
| 2010-09-03 | 579-233 | not yet reported which blocks → | TELUS Quebec | 2243 | Le Gardeur | — |
| 2010-09-03 | 579-234 | not yet reported which blocks → | TELUS Quebec | 2243 | Longueuil | — |
| 2010-09-03 | 579-235 | not yet reported which blocks → | TELUS Quebec | 2243 | Mascouche | — |
| 2010-09-03 | 579-236 | not yet reported which blocks → | TELUS Quebec | 2243 | Pont-Viau | — |
| 2010-09-03 | 579-237 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Rose | — |
| 2010-09-03 | 579-238 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Therese | — |
| 2010-09-03 | 579-239 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Hyacinthe | — |
| 2010-09-03 | 579-240 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jerome | — |
| 2010-09-03 | 579-241 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Lambert | — |
| 2010-09-03 | 579-242 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Vincent-de-Paul | — |
| 2010-09-03 | 705-401 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Barrie | — |
| 2010-09-03 | 705-402 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | North Bay | — |
| 2010-09-03 | 705-403 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Peterborough | — |
| 2010-09-03 | 705-404 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Sudbury | — |
| 2010-09-03 | 705-405 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Port Sydney | — |
| 2010-09-03 | 773-943 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | CHICGOZN02 | IL |
| 2010-09-03 | 832-600 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RICHMNRNBG | TX |
| 2010-09-03 | 832-703 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HOUSTON | TX |
| 2010-09-03 | 928-228 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - AZ | 587F | PIMA | AZ |
| 2010-09-03 | 980-239 | 0–9 XXXall 10 · 3 holders which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | MONROE | NC |
| 2010-09-02 | 224-277 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | NORTHBROOK | IL |
| 2010-09-02 | 319-529 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | IA |
| 2010-09-02 | 423-460 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TN | 124F | MOUNTAINCY | TN |
| 2010-09-02 | 630-360 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | SUGARGROVE | IL |
| 2010-09-02 | 702-619 | 0–9 XXXwhole prefix which blocks → | METROPCS, INC. | 5562 | LAS VEGAS | NV |
| 2010-09-01 | 214-425 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MCKINNEY | TX |
| 2010-09-01 | 413-216 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | BECKET | MA |
| 2010-09-01 | 567-280 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | FREMONT | OH |
| 2010-09-01 | 754-229 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - FL | 982E | CORAL SPG | FL |
| 2010-09-01 | 850-493 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | GREENVILLE | FL |
| 2010-09-01 | 904-336 | 0–9 XXXwhole prefix which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | ORANGEPARK | FL |
| 2010-09-01 | 910-314 | not yet reported which blocks → | WINDSTREAM NORTH CAROLINA, INC. | 0476 | ABERDEEN | NC |
| 2010-09-01 | 970-516 | 0–9 XXXall 10 · 5 holders which blocks → | FARMERS TELECOMMUNICATIONS, INC. - CO | 075G | CORTEZ | CO |
| 2010-09-01 | 971-264 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | NEWBERG | OR |
| 2010-09-01 | 971-333 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | HOOD LAND | OR |
| 2010-09-01 | 980-223 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | STATESVL | NC |
| 2010-08-31 | 289-933 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2010-08-31 | 289-938 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| 2010-08-31 | 289-939 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2010-08-31 | 302-408 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOLLY OAK | DE |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.