NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
Which carriers received which NPA-NXX prefixes, and where. A single prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are often split across different carriers — use the blocks link on any row (or the thousands-block view above) to see which carrier holds which block. 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 | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2009-09-10 | 865-304 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | KNOXVILLE | TN |
| 2009-09-09 | 325-269 pooled blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CLYDE | TX |
| 2009-09-09 | 336-528 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | WINSTN SAL | NC |
| 2009-09-09 | 480-369 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2009-09-09 | 480-822 pooled blocks → | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| 2009-09-09 | 505-274 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM | 6573 | ALBUQURQUE | NM |
| 2009-09-09 | 520-308 pooled blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2009-09-09 | 520-310 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2009-09-09 | 571-318 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN19 | VA |
| 2009-09-09 | 574-316 pooled blocks → | BANDWIDTH.COM CLEC, LLC - IN | 105F | PLYMOUTH | IN |
| 2009-09-09 | 616-258 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | GRAND RPDS | MI |
| 2009-09-09 | 623-258 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2009-09-09 | 646-599 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | NWYRCYZN01 | NY |
| 2009-09-09 | 720-358 pooled blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUDSON | CO |
| 2009-09-09 | 803-521 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | COLUMBIA | SC |
| 2009-09-09 | 850-347 pooled blocks → | PAETEC ITEL, LLC | 829J | MONTICELLO | FL |
| 2009-09-09 | 850-408 blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | TALLAHASSE | FL |
| 2009-09-09 | 862-253 pooled blocks → | ONVOY, LLC - NJ | 637C | ORANGE | NJ |
| 2009-09-09 | 910-729 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | FAYETTEVL | NC |
| 2009-09-09 | 980-295 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | SHELBY | NC |
| 2009-09-09 | 980-395 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | CHARLOTTE | NC |
| 2009-09-08 | 440-731 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | ELYRIA | OH |
| 2009-09-08 | 443-252 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | PERRYVILLE | MD |
| 2009-09-08 | 443-687 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | BALTIMORE | MD |
| 2009-09-08 | 720-396 pooled blocks → | AT&T - LOCAL | 7421 | DENVER | CO |
| 2009-09-08 | 720-397 pooled blocks → | AT&T - LOCAL | 7421 | DENVER | CO |
| 2009-09-04 | 208-994 pooled blocks → | ONVOY, LLC - ID | 689F | BOISE | ID |
| 2009-09-04 | 234-564 pooled blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SALEM | OH |
| 2009-09-04 | 720-340 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | LONGMONT | CO |
| 2009-09-04 | 720-395 pooled blocks → | AT&T - LOCAL | 7421 | DENVER | CO |
| 2009-09-04 | 774-320 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | ROCHESTER | MA |
| 2009-09-03 | 318-528 pooled blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | ALEXANDRIA | LA |
| 2009-09-03 | 408-459 pooled blocks → | ONVOY, LLC - CA | 649C | SNJS WEST | CA |
| 2009-09-03 | 671-979 blocks → | PTI PACIFICA INC. DBA IT&E - GU | 335E | AGANA | GU |
| 2009-09-03 | 951-286 pooled blocks → | METROPCS NETWORKS, LLC | 899D | RIVERSIDE | CA |
| 2009-09-02 | 316-243 pooled blocks → | ONVOY, LLC - KS | 205F | WICHITA | KS |
| 2009-09-02 | 347-856 pooled blocks → | METROPCS, INC. | 5562 | NWYRCYZN07 | NY |
| 2009-09-02 | 347-858 pooled blocks → | METROPCS, INC. | 5562 | NWYRCYZN11 | NY |
| 2009-09-02 | 412-416 pooled blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTTSBGZON1 | PA |
| 2009-09-02 | 847-396 pooled blocks → | ILLINOIS BELL TEL CO | 9329 | DUNDEE | IL |
| 2009-09-01 | 289-233 blocks → | TELUS Mobility | 8303 | Brampton | — |
| 2009-09-01 | 289-255 blocks → | TELUS Integrated Communications | 2782 | Ajax-Pickering | — |
| 2009-09-01 | 289-256 blocks → | TELUS Integrated Communications | 2782 | Woodbridge | — |
| 2009-09-01 | 774-295 pooled blocks → | TC SYSTEMS, INC. | 7135 | BELLINGHAM | MA |
| 2009-09-01 | 952-500 pooled blocks → | FRONTIER COMMUNICATIONS OF AMERICA, INC. - MN | 2474 | TWINCITIES | MN |
| 2009-08-31 | 989-273 pooled blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HIGGINS LK | MI |
| 2009-08-31 | 989-296 pooled blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRESCOTT | MI |
| 2009-08-28 | 318-594 pooled blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | COLUMBIA | LA |
| 2009-08-28 | 347-520 pooled blocks → | METROPCS, INC. | 5562 | NWYRCYZN03 | NY |
| 2009-08-28 | 503-894 pooled blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
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.