NumberResearchRecent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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 taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2015-12-08 | 506-518 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Moncton | — |
| 2015-12-08 | 506-519 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Saint John | — |
| 2015-12-08 | 515-336 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DES MOINES | IA |
| 2015-12-08 | 531-201 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - NE | 549E | OMAHA | NE |
| 2015-12-08 | 541-780 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - OR | 750E | EUGENE | OR |
| 2015-12-08 | 709-412 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Corner Brook | — |
| 2015-12-08 | 709-413 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Labrador City - Wabush | — |
| 2015-12-08 | 709-414 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Happy Valley - Goose Bay | — |
| 2015-12-08 | 709-415 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | St. John's | — |
| 2015-12-08 | 740-899 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | NEWARK | OH |
| 2015-12-08 | 740-921 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BELLAIRE | OH |
| 2015-12-08 | 902-409 | not yet reported which blocks → | Aliant Telecom (PEI) | 8087 | Charlottetown | — |
| 2015-12-08 | 902-413 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | Yarmouth | — |
| 2015-12-08 | 902-416 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | Sydney | — |
| 2015-12-08 | 902-502 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | Halifax | — |
| 2015-12-08 | 902-513 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | New Glasgow | — |
| 2015-12-08 | 970-852 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CO | 078F | GRAND JCT | CO |
| 2015-12-07 | 202-868 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC | 6402 | WSHNGTNZN1 | DC |
| 2015-12-07 | 210-361 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - TX | 903C | SANANTONIO | TX |
| 2015-12-07 | 231-234 | 1XXX which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | BUCKLEY | MI |
| 2015-12-07 | 321-425 | 0–9 XXXall 10 · 5 holders which blocks → | BHN IP ENABLED SERVICES, LLC | 045L | EAU GALLIE | FL |
| 2015-12-07 | 385-455 | 0–9 XXXall 10 · 4 holders which blocks → | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | LEHI | UT |
| 2015-12-07 | 385-707 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-12-07 | 401-771 | 0–9 XXXall 10 · 2 holders which blocks → | WIDE VOICE, LLC - RI | 343H | PROVIDENCE | RI |
| 2015-12-07 | 614-549 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | COLUMBUS | OH |
| 2015-12-07 | 646-804 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN01 | NY |
| 2015-12-07 | 657-288 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-298 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CYPRESS | CA |
| 2015-12-07 | 657-324 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 747-215 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GLENDALE | CA |
| 2015-12-07 | 805-825 | 0–9 XXXall 10 · 6 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARROYOGRND | CA |
| 2015-12-07 | 862-872 | 0–9 XXXall 10 · 6 holders which blocks → | WIDE VOICE, LLC - NJ | 396H | NEWARK | NJ |
| 2015-12-04 | 202-851 | 0–9 XXXall 10 · 5 holders which blocks → | WIDE VOICE, LLC - DC | 538H | WSHNGTNZN1 | DC |
| 2015-12-04 | 306-200 | not yet reported which blocks → | SaskTel Mobility | 9868 | Saskatoon | — |
| 2015-12-04 | 306-510 | not yet reported which blocks → | SaskTel Mobility | 9868 | Regina | — |
| 2015-12-04 | 306-806 | not yet reported which blocks → | SaskTel Mobility | 9868 | Kindersley | — |
| 2015-12-04 | 306-809 | not yet reported which blocks → | SaskTel Mobility | 9868 | Weyburn | — |
| 2015-12-04 | 312-868 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IL | 984E | CHICGOZN01 | IL |
| 2015-12-04 | 336-276 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - NC | 638E | WINSTN SAL | NC |
| 2015-12-04 | 431-802 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2015-12-04 | 438-902 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2015-12-04 | 470-286 | 0–9 XXXall 10 · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | ATLANTA NE | GA |
| 2015-12-04 | 586-299 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLCV - MI | 543C | MT CLEMENS | MI |
| 2015-12-04 | 587-904 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-12-04 | 616-266 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | TRUFANT | MI |
| 2015-12-04 | 647-902 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2015-12-04 | 661-585 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLDL PLDL | CA |
| 2015-12-04 | 667-771 | 0–9 XXXall 10 · 5 holders which blocks → | WIDE VOICE, LLC - MD | 530H | BALTIMORE | MD |
| 2015-12-04 | 757-400 | 0–9 XXXwhole prefix which blocks → | PAETEC ITEL, LLC | 829J | NRFOLKZON2 | VA |
| 2015-12-04 | 804-801 | 0–9 XXXall 10 · 5 holders which blocks → | WIDE VOICE, LLC - VA | 519H | RICHMOND | VA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.