NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2012-01-24 | 425-628 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BELLEVUE | WA |
| 2012-01-24 | 438-930 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-01-24 | 504-360 | 0–9 XXXall 10 · 4 holders which blocks → | VOICESTREAM GSM I, LLC | 150C | KENNER | LA |
| 2012-01-24 | 579-489 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Hyacinthe | — |
| 2012-01-24 | 581-321 | not yet reported which blocks → | Videotron Ltd. | 8306 | Sacre-Coeur | — |
| 2012-01-24 | 581-323 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Anne-de-Portneuf | — |
| 2012-01-24 | 581-324 | not yet reported which blocks → | Videotron Ltd. | 8306 | Bergeronnes | — |
| 2012-01-24 | 587-679 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| 2012-01-24 | 647-768 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2012-01-24 | 951-338 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TEMSCL CNY | CA |
| 2012-01-23 | 205-530 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - AL | 072F | JASPER | AL |
| 2012-01-23 | 219-515 | 0–9 XXXall 10 · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | DYER | IN |
| 2012-01-23 | 224-803 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL |
| 2012-01-23 | 317-515 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2012-01-23 | 336-536 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NC | 998E | WALNUTCOVE | NC |
| 2012-01-23 | 385-428 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MURRAY | UT |
| 2012-01-23 | 701-815 | 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - ND | 999E | NOMCINTOSH | ND |
| 2012-01-23 | 903-308 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TX | 004F | EMORY | TX |
| 2012-01-23 | 906-330 | 0XXX2XXX3XXX4XXX5XXX7XXX · 3 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | POWERS | MI |
| 2012-01-23 | 917-795 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN04 | NY |
| 2012-01-23 | 936-202 | 0–9 XXXall 10 · 9 holders which blocks → | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY | 2109 | CONROE | TX |
| 2012-01-23 | 970-717 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CO | 078F | HAYDEN | CO |
| 2012-01-20 | 289-309 | not yet reported which blocks → | Fibernetics Corporation | 464D | Hamilton | — |
| 2012-01-20 | 518-535 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | DELANSON | NY |
| 2012-01-20 | 518-551 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | PERU | NY |
| 2012-01-20 | 518-552 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | SALEM | NY |
| 2012-01-20 | 518-553 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | VALLEY FLS | NY |
| 2012-01-20 | 647-490 | not yet reported which blocks → | Iristel Inc. | 154E | Toronto | — |
| 2012-01-20 | 647-491 | not yet reported which blocks → | Iristel Inc. | 154E | Toronto | — |
| 2012-01-20 | 647-492 | not yet reported which blocks → | Iristel Inc. | 154E | Toronto | — |
| 2012-01-20 | 647-493 | not yet reported which blocks → | Iristel Inc. | 154E | Toronto | — |
| 2012-01-20 | 647-494 | not yet reported which blocks → | Iristel Inc. | 154E | Toronto | — |
| 2012-01-20 | 778-523 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Canal Flats | — |
| 2012-01-19 | 204-531 | not yet reported which blocks → | Provincial Tel Inc. | 498E | Winkler | — |
| 2012-01-19 | 204-700 | not yet reported which blocks → | Provincial Tel Inc. | 498E | Lundar | — |
| 2012-01-19 | 204-715 | not yet reported which blocks → | Provincial Tel Inc. | 498E | Carman | — |
| 2012-01-19 | 204-812 | not yet reported which blocks → | Provincial Tel Inc. | 498E | Morden | — |
| 2012-01-19 | 289-312 | not yet reported which blocks → | Iristel Inc. | 154E | Oshawa | — |
| 2012-01-19 | 343-357 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bancroft | — |
| 2012-01-19 | 512-202 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | AUSTIN | TX |
| 2012-01-19 | 514-900 | not yet reported which blocks → | Iristel Inc. | 154E | Pointe-Claire | — |
| 2012-01-19 | 541-502 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | GOLD HILL | OR |
| 2012-01-19 | 579-430 | not yet reported which blocks → | Videotron Ltd. | 8306 | Napierville | — |
| 2012-01-19 | 579-431 | not yet reported which blocks → | Videotron Ltd. | 8306 | Lacolle | — |
| 2012-01-19 | 579-432 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Blaise | — |
| 2012-01-19 | 579-433 | not yet reported which blocks → | Videotron Ltd. | 8306 | Bedford | — |
| 2012-01-19 | 651-302 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | HASTINGS | MN |
| 2012-01-19 | 682-202 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CLEBURNE | TX |
| 2012-01-19 | 702-708 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NV |
| 2012-01-19 | 908-224 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NJ | 118F | STROUDSBG | NJ |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.