NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks — who really holds the numbers | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2009-09-25 | 819-556 | Not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Shawinigan | — |
| 2009-09-25 | 910-518 | 10 of 10 blocks assigned · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | BEULAVILLE | NC |
| 2009-09-24 | 205-578 | 10 of 10 blocks assigned · 4 holders which blocks → | POWERTEL BIRMINGHAM LICENSES, INC. | 7475 | BIRMINGHAM | AL |
| 2009-09-24 | 334-610 | 10 of 10 blocks assigned · 7 holders which blocks → | POWERTEL BIRMINGHAM LICENSES, INC. | 7475 | OPELIKA | AL |
| 2009-09-24 | 407-434 | 10 of 10 blocks assigned · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | ORLANDO | FL |
| 2009-09-24 | 616-264 | 10 of 10 blocks assigned · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | GRAND RPDS | MI |
| 2009-09-24 | 619-816 | 10 of 10 blocks assigned · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2009-09-24 | 912-346 | Not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | SAVANNAH | GA |
| 2009-09-24 | 912-347 | 3 of 10 blocks assigned · 1 holder which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | HAZLEHURST | GA |
| 2009-09-24 | 941-357 | 10 of 10 blocks assigned · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRADENTON | FL |
| 2009-09-23 | 226-203 | Not yet reported which blocks → | TELUS Mobility | 8303 | Guelph | — |
| 2009-09-23 | 404-482 | 10 of 10 blocks assigned · 3 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | ATLANTA | GA |
| 2009-09-23 | 423-448 | Not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PIKEVILLE | TN |
| 2009-09-23 | 484-426 | 10 of 10 blocks assigned · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALLENTOWN | PA |
| 2009-09-23 | 763-314 | 9 of 10 blocks assigned · 4 holders which blocks → | FIBERNET MONTICELLO | 716F | MONTICELLO | MN |
| 2009-09-23 | 778-631 | Not yet reported which blocks → | CityWest Cable (North) Corp - BC | 705F | Kitimat | — |
| 2009-09-23 | 778-634 | Not yet reported which blocks → | CityWest Cable (North) Corp - BC | 705F | Terrace | — |
| 2009-09-23 | 951-287 | 10 of 10 blocks assigned · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PERRIS | CA |
| 2009-09-22 | 347-483 | 10 of 10 blocks assigned · 3 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN03 | NY |
| 2009-09-22 | 440-723 | 10 of 10 blocks assigned · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | ELYRIA | OH |
| 2009-09-22 | 484-374 | 10 of 10 blocks assigned · 7 holders which blocks → | CTSI, INC. - PA | 7513 | POTTSTOWN | PA |
| 2009-09-22 | 513-655 | 10 of 10 blocks assigned · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | CINCINNATI | OH |
| 2009-09-22 | 570-266 | 10 of 10 blocks assigned · 4 holders which blocks → | CTSI, INC. - PA | 7513 | WILKSBARRE | PA |
| 2009-09-22 | 918-550 | 10 of 10 blocks assigned · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2009-09-21 | 217-730 | 9 of 10 blocks assigned · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WINCHESTER | IL |
| 2009-09-21 | 484-622 | Whole prefix — all 10 blocks, 1 holder which blocks → | VERIZON PENNSYLVANIA, INC. | 9208 | PHPHSBZN30 | PA |
| 2009-09-21 | 717-461 | 10 of 10 blocks assigned · 4 holders which blocks → | CTSI, INC. - PA | 7513 | HARISBGZN1 | PA |
| 2009-09-21 | 914-334 | 10 of 10 blocks assigned · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | MOUNTKISCO | NY |
| 2009-09-18 | 306-321 | Not yet reported which blocks → | SaskTel Mobility | 9868 | Saskatoon | — |
| 2009-09-18 | 306-520 | Not yet reported which blocks → | SaskTel Mobility | 9868 | Regina | — |
| 2009-09-18 | 514-439 | Not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2009-09-18 | 705-415 | Not yet reported which blocks → | Distributel | 082E | Alliston | — |
| 2009-09-18 | 705-416 | Not yet reported which blocks → | Distributel | 082E | Collingwood | — |
| 2009-09-18 | 705-418 | Not yet reported which blocks → | Distributel | 082E | Orillia | — |
| 2009-09-18 | 778-420 | Not yet reported which blocks → | Shaw Telecom Inc. | 497E | Willow Point | — |
| 2009-09-17 | 229-370 | Not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | QUITMAN | GA |
| 2009-09-17 | 240-406 | 10 of 10 blocks assigned · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN10 | MD |
| 2009-09-17 | 308-767 | Not yet reported which blocks → | GREAT PLAINS BROADBAND, INC. - NE | 012E | BROKEN BOW | NE |
| 2009-09-17 | 412-518 | 10 of 10 blocks assigned · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2009-09-17 | 425-312 | 10 of 10 blocks assigned · 6 holders which blocks → | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7173 | EVERETT | WA |
| 2009-09-17 | 480-352 | 10 of 10 blocks assigned · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2009-09-17 | 484-602 | 10 of 10 blocks assigned · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| 2009-09-17 | 518-305 | Whole prefix — all 10 blocks, 1 holder which blocks → | LEVEL 3 TELECOM OF NEW YORK, LP - NY | 8473 | BALLSTNSPA | NY |
| 2009-09-17 | 613-617 | Not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ottawa-Hull | — |
| 2009-09-17 | 705-661 | Not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Campbellford | — |
| 2009-09-17 | 705-700 | Not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Burleigh Falls | — |
| 2009-09-17 | 705-803 | Not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Havelock | — |
| 2009-09-17 | 705-891 | Not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Nephton | — |
| 2009-09-17 | 705-925 | Not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Warkworth | — |
| 2009-09-17 | 804-888 | 10 of 10 blocks assigned · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | RICHMOND | VA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.