NumberResearchRecent prefix assignments
354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026
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
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May 2026
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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 |
|---|---|---|---|---|---|---|
| 2003-10-14 | 229-944 | 0–9 XXXall 10 · 6 holders which blocks → | AT&T - LOCAL | 7421 | AMERICUS | GA |
| 2003-10-14 | 306-659 | not yet reported which blocks → | SaskTel | 8091 | Saskatoon | — |
| 2003-10-13 | 340-344 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | CHTAMSTTHS | VI |
| 2003-10-13 | 352-522 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | DUNNELLON | FL |
| 2003-10-13 | 410-982 | 0–9 XXXall 10 · 4 holders which blocks → | QUANTUM TELECOMMUNICATIONS, INC. - MD | 2596 | BALTIMORE | MD |
| 2003-10-13 | 601-552 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | HAZLEHURST | MS |
| 2003-10-13 | 601-751 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | DE KALB | MS |
| 2003-10-13 | 601-755 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | WAYNESBORO | MS |
| 2003-10-13 | 601-756 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | MONTICELLO | MS |
| 2003-10-13 | 601-768 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | QUITMAN | MS |
| 2003-10-13 | 618-309 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | METROPOLIS | IL |
| 2003-10-13 | 631-219 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | BRENTWOOD | NY |
| 2003-10-10 | 204-578 | not yet reported which blocks → | MTS Inc. | 8088 | Brandon | — |
| 2003-10-10 | 270-227 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MURRAY | KY |
| 2003-10-10 | 706-680 | 0–9 XXXall 10 · 4 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | ROYSTON | GA |
| 2003-10-10 | 780-820 | not yet reported which blocks → | TELUS | 8084 | Jasper | — |
| 2003-10-10 | 780-821 | not yet reported which blocks → | TELUS | 8084 | High Level | — |
| 2003-10-10 | 905-288 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Streetsville | — |
| 2003-10-09 | 301-398 | 0–9 XXXall 10 · 2 holders which blocks → | VERIZON MARYLAND, INC. | 9212 | WSNGTNZN10 | MD |
| 2003-10-09 | 605-488 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | KADOKA | SD |
| 2003-10-09 | 662-725 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GREENVILLE | MS |
| 2003-10-09 | 785-540 | not yet reported which blocks → | NEX-TECH, LLC - KS | 4366 | PHILLIPSBG | KS |
| 2003-10-09 | 808-489 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HONOLULU | HI |
| 2003-10-08 | 304-704 | none assigned yet which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKINS | WV |
| 2003-10-08 | 478-285 | 0–9 XXXall 10 · 4 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | EASTMAN | GA |
| 2003-10-08 | 505-593 | not yet reported which blocks → | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 4146 | GALLUP | NM |
| 2003-10-07 | 203-369 | 0–9 XXXwhole prefix which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 7230 | OLDGRNWICH | CT |
| 2003-10-07 | 478-298 | 0–9 XXXall 10 · 5 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | COCHRAN | GA |
| 2003-10-07 | 870-883 | 1XXX4XXX6XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | 6805 | SHERIDAN | AR |
| 2003-10-06 | 207-320 | 0–9 XXXall 10 · 5 holders which blocks → | UNITED STATES CELLULAR - ME | 6291 | LIVERMRFLS | ME |
| 2003-10-06 | 870-882 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | JONESBORO | AR |
| 2003-10-06 | 870-884 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | 6805 | FORDYCE | AR |
| 2003-10-06 | 870-885 | 5XXX7XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | 6805 | BEARDEN | AR |
| 2003-10-06 | 906-450 | 6XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANISTIQUE | MI |
| 2003-10-03 | 828-593 | 2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | CLYDE | NC |
| 2003-10-02 | 256-618 | 0–9 XXXall 10 · 3 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | ASHLAND | AL |
| 2003-10-02 | 443-278 | 0–9 XXXall 10 · 4 holders which blocks → | VDL, INC. DBA GLOBAL TELECOM BROKERS - MD | 4492 | BALTIMORE | MD |
| 2003-10-02 | 608-415 | 0–9 XXXall 10 · 4 holders which blocks → | UNITED STATES CELLULAR - WI | 6274 | REEDSBURG | WI |
| 2003-10-02 | 815-595 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → | AT&T - LOCAL | 7421 | OREGON | IL |
| 2003-10-01 | 248-200 | 0–9 XXXall 10 · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | SOUTHFIELD | MI |
| 2003-10-01 | 336-441 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NC | 3235 | SUMMERFLD | NC |
| 2003-10-01 | 514-469 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Lachine | — |
| 2003-10-01 | 514-472 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Roxboro | — |
| 2003-10-01 | 514-551 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ste-Genevieve | — |
| 2003-10-01 | 514-671 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Pointe-Claire | — |
| 2003-10-01 | 608-412 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → | UNITED STATES CELLULAR - WI | 6274 | PRARIDCHIN | WI |
| 2003-10-01 | 803-747 | 5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | ORANGEBURG | SC |
| 2003-10-01 | 905-231 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ajax-Pickering | — |
| 2003-10-01 | 905-250 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | South Pickering | — |
| 2003-10-01 | 905-486 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Port Credit | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.