NumberResearchRecent prefix assignments
341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2003-06-09 | 603-300 | 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | CHESTER | NH |
| 2003-06-09 | 912-298 | 3XXX4XXX8XXX9XXX · 3 holders which blocks → | ONVOY, LLC - GA | 067D | SAVANNAH | GA |
| 2003-06-08 | 417-281 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | LOCKWOOD | MO |
| 2003-06-06 | 256-850 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | MADISON | AL |
| 2003-06-06 | 506-720 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Caraquet | — |
| 2003-06-06 | 819-316 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Val-D'Or | — |
| 2003-06-06 | 931-349 | 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | COOKEVILLE | TN |
| 2003-06-05 | 216-333 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CLEVELAND | OH |
| 2003-06-05 | 224-364 | 0–9 XXXwhole prefix which blocks → | ILLINOIS BELL TEL CO | 9329 | EVANSTON | IL |
| 2003-06-05 | 585-228 | 0–9 XXXall 10 · 6 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | WARSAW | NY |
| 2003-06-05 | 631-241 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2003-06-05 | 715-219 | not yet reported which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | ANTIGO | WI |
| 2003-06-05 | 715-351 | 9XXX which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | MERRILL | WI |
| 2003-06-05 | 715-436 | 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | TOMAHAWK | WI |
| 2003-06-05 | 715-437 | not yet reported which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | RHINELANDR | WI |
| 2003-06-05 | 715-439 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | MINOCQUA | WI |
| 2003-06-05 | 715-521 | 7XXX8XXX9XXX · 3 holders which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | ARGONNE | WI |
| 2003-06-05 | 715-522 | 5XXX7XXX9XXX · 3 holders which blocks → | METRO SOUTHWEST PCS, LLP | 9759 | EAGLERIVER | WI |
| 2003-06-05 | 715-622 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PLTC, LLC - WI | 375F | LAONA | WI |
| 2003-06-05 | 845-596 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | NEW CITY | NY |
| 2003-06-04 | 219-221 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | MICHIGANCY | IN |
| 2003-06-04 | 317-363 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2003-06-04 | 317-366 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2003-06-04 | 574-302 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SOUTH BEND | IN |
| 2003-06-04 | 574-303 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | SOUTH BEND | IN |
| 2003-06-04 | 850-515 | 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | HOLLEYNVRR | FL |
| 2003-06-04 | 863-368 | 3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | AVON PARK | FL |
| 2003-06-03 | 250-264 | not yet reported which blocks → | TELUS | 8086 | Fort St. John | — |
| 2003-06-03 | 250-501 | not yet reported which blocks → | TELUS | 8086 | Keremeos | — |
| 2003-06-03 | 386-466 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | LAKE CITY | FL |
| 2003-06-03 | 435-253 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | FILLMORE | UT |
| 2003-06-03 | 573-777 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | COLUMBIA | MO |
| 2003-06-03 | 573-982 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → | ONVOY, LLC - MO | 093F | CENTRALIA | MO |
| 2003-06-03 | 575-418 | 0–9 XXXall 10 · 7 holders which blocks → | T-MOBILE USA, INC. | 6529 | SOCORRO | NM |
| 2003-06-03 | 740-478 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | LAURELVL | OH |
| 2003-06-02 | 334-441 | 0XXX1XXX2XXX3XXX4XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | ABBEVILLE | AL |
| 2003-06-02 | 507-588 | 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MCC TELEPHONY OF MINNESOTA, LLC - MN | 719F | LK CRYSTAL | MN |
| 2003-06-02 | 514-791 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2003-06-02 | 601-219 | not yet reported which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | CENTREVL | MS |
| 2003-06-02 | 601-673 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | LUCEDALE | MS |
| 2003-06-02 | 601-702 | 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | CELLULAR SOUTH, INC. | 6581 | PORTGIBSON | MS |
| 2003-06-02 | 709-235 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Gander | — |
| 2003-06-02 | 709-293 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Grand Falls | — |
| 2003-06-02 | 709-638 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Corner Brook | — |
| 2003-06-02 | 812-519 | 5XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | SEYMOUR | IN |
| 2003-06-02 | 812-578 | 3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | BEDFORD | IN |
| 2003-06-02 | 812-642 | 3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | WASHINGTON | IN |
| 2003-06-02 | 907-715 | not yet reported which blocks → | GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION | 6872 | WASILLA | AK |
| 2003-06-02 | 936-337 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | NEWWAVERLY | TX |
| 2003-06-02 | 956-259 | not yet reported which blocks → | SMARTCOM TELEPHONE, LLC | 4866 | EDINBURG | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.