NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 |
|---|---|---|---|---|---|---|
| 2002-10-03 | 586-557 | 0XXX1XXX8XXX9XXX · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | MT CLEMENS | MI |
| 2002-10-03 | 630-768 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | NAPERVILLE | IL |
| 2002-10-03 | 717-552 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CHAMBERSBG | PA |
| 2002-10-03 | 765-613 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | MARION | IN |
| 2002-10-03 | 780-893 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2002-10-03 | 810-656 | none assigned yet which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | LAPEER | MI |
| 2002-10-03 | 819-360 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2002-10-03 | 845-664 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PEARLRIVER | NY |
| 2002-10-03 | 870-405 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MT HOME | AR |
| 2002-10-03 | 905-869 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2002-10-03 | 905-872 | not yet reported which blocks → | Bell Mobility | 6574 | Brampton | — |
| 2002-10-02 | 254-220 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | KILLEEN | TX |
| 2002-10-02 | 260-242 | 3XXX4XXX5XXX6XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | KENDALLVL | IN |
| 2002-10-02 | 360-915 | 0–9 XXXall 10 · 4 holders which blocks → | TSS DIGITAL SERVICES, LCC - WA | 1488 | OLYMPIA | WA |
| 2002-10-02 | 361-799 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | CUERO | TX |
| 2002-10-02 | 507-404 | none assigned yet which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW ULM | MN |
| 2002-10-02 | 571-264 | none assigned yet which blocks → | METROPCS, INC. | 5562 | DALE CITY | VA |
| 2002-10-02 | 605-275 | not yet reported which blocks → | MIDCONTINENT COMMUNICATIONS. - SD | 7076 | SIOUX FLS | SD |
| 2002-10-02 | 706-768 | none assigned yet which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | CLARKESVL | GA |
| 2002-10-02 | 712-346 | 0XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | SPENCER | IA |
| 2002-10-02 | 778-552 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Aldergrove | — |
| 2002-10-02 | 830-444 | 0XXX2XXX3XXX4XXX5XXX7XXX · 6 holders which blocks → | T-MOBILE USA, INC. | 6529 | HONDO | TX |
| 2002-10-02 | 830-445 | 0XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | GONZALES | TX |
| 2002-10-02 | 830-446 | 3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | BOERNE | TX |
| 2002-10-02 | 956-735 | none assigned yet which blocks → | METROPCS, INC. | 5562 | RIGRANDECY | TX |
| 2002-10-02 | 956-746 | 0XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → | STPCS JOINT VENTURE, LLC | 4290 | RAYMONDVL | TX |
| 2002-10-01 | 215-237 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHPHSBZN33 | PA |
| 2002-10-01 | 250-691 | not yet reported which blocks → | TELUS | 8086 | Burns Lake | — |
| 2002-10-01 | 250-844 | not yet reported which blocks → | TELUS | 8086 | Houston | — |
| 2002-10-01 | 250-988 | not yet reported which blocks → | TELUS | 8086 | Mackenzie | — |
| 2002-10-01 | 256-499 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | AT&T - LOCAL | 7421 | ANNISTON | AL |
| 2002-10-01 | 352-231 | 7XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | GAINESVL | FL |
| 2002-10-01 | 403-771 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2002-10-01 | 403-990 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2002-10-01 | 479-206 | 3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BOONEVILLE | AR |
| 2002-10-01 | 479-207 | 6XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WALDRON | AR |
| 2002-10-01 | 480-229 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2002-10-01 | 484-364 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | DOWNINGTN | PA |
| 2002-10-01 | 484-369 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | ROYERSFORD | PA |
| 2002-10-01 | 502-488 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LEBANONJCT | KY |
| 2002-10-01 | 567-245 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | FOSTORIA | OH |
| 2002-10-01 | 717-673 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | LEBANON | PA |
| 2002-10-01 | 717-676 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | YORK | PA |
| 2002-10-01 | 817-290 | 0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ATLAS | TX |
| 2002-09-30 | 361-207 | 5XXX6XXX7XXX8XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ALICE | TX |
| 2002-09-30 | 403-998 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2002-09-30 | 416-220 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2002-09-30 | 418-997 | not yet reported which blocks → | TELUS Mobility | 8303 | Quebec | — |
| 2002-09-30 | 418-998 | not yet reported which blocks → | TELUS Mobility | 8303 | Quebec | — |
| 2002-09-30 | 484-213 | none assigned yet which blocks → | METROPCS, INC. | 5562 | PHPHSBZN30 | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.