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 |
|---|---|---|---|---|---|---|
| 2015-08-10 | 717-869 | 0–9 XXXall 10 · 6 holders which blocks → | D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE | 6846 | LANCASTER | PA |
| 2015-08-10 | 819-528 | not yet reported which blocks → | Bell Mobility | 6574 | Maniwaki | — |
| 2015-08-10 | 819-529 | not yet reported which blocks → | Bell Mobility | 6574 | Shawinigan | — |
| 2015-08-10 | 828-929 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | LENOIR | NC |
| 2015-08-10 | 902-540 | not yet reported which blocks → | TELUS Mobility | 8303 | Saulnierville | — |
| 2015-08-10 | 916-840 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | SCRM MAIN | CA |
| 2015-08-10 | 919-748 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | DURHAM | NC |
| 2015-08-10 | 956-619 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WESLACO | TX |
| 2015-08-07 | 385-383 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | CLEARFIELD | UT |
| 2015-08-06 | 213-358 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA |
| 2015-08-06 | 317-935 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2015-08-06 | 343-439 | not yet reported which blocks → | InnSysVoice Corp | 383H | Lancaster | — |
| 2015-08-06 | 343-440 | not yet reported which blocks → | InnSysVoice Corp | 383H | Long Sault | — |
| 2015-08-06 | 343-441 | not yet reported which blocks → | InnSysVoice Corp | 383H | Martintown | — |
| 2015-08-06 | 343-442 | not yet reported which blocks → | InnSysVoice Corp | 383H | Maxville | — |
| 2015-08-06 | 343-443 | not yet reported which blocks → | InnSysVoice Corp | 383H | Morrisburg | — |
| 2015-08-06 | 343-444 | not yet reported which blocks → | InnSysVoice Corp | 383H | Cornwall | — |
| 2015-08-06 | 343-445 | not yet reported which blocks → | InnSysVoice Corp | 383H | St. Eugene | — |
| 2015-08-06 | 343-446 | not yet reported which blocks → | InnSysVoice Corp | 383H | St. Isidore | — |
| 2015-08-06 | 343-447 | not yet reported which blocks → | InnSysVoice Corp | 383H | St-Regis | — |
| 2015-08-06 | 343-448 | not yet reported which blocks → | InnSysVoice Corp | 383H | Vankleek Hill | — |
| 2015-08-06 | 343-449 | not yet reported which blocks → | InnSysVoice Corp | 383H | Williamsburg | — |
| 2015-08-06 | 470-589 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | BUFORD | GA |
| 2015-08-06 | 701-416 | 5XXX which blocks → | MIDCONTINENT COMMUNICATIONS - ND | 3065 | HANKINSON | ND |
| 2015-08-06 | 701-519 | 5XXX which blocks → | MIDCONTINENT COMMUNICATIONS - ND | 3065 | LIDGERWOOD | ND |
| 2015-08-06 | 765-703 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IN | 105F | PENDLETON | IN |
| 2015-08-06 | 909-501 | 0–9 XXXall 10 · 4 holders which blocks → | FRONTIER CALIFORNIA INC. | 2319 | S BERNDINO | CA |
| 2015-08-06 | 980-417 | 0–9 XXXall 10 · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | CHARLOTTE | NC |
| 2015-08-06 | 984-465 | 0–9 XXXall 10 · 7 holders which blocks → | SOUTH CAROLINA NET, INC. - NC | 511C | CARY | NC |
| 2015-08-05 | 343-432 | not yet reported which blocks → | InnSysVoice Corp | 383H | Alexandria | — |
| 2015-08-05 | 343-433 | not yet reported which blocks → | InnSysVoice Corp | 383H | Avonmore | — |
| 2015-08-05 | 343-434 | not yet reported which blocks → | InnSysVoice Corp | 383H | Finch | — |
| 2015-08-05 | 343-435 | not yet reported which blocks → | InnSysVoice Corp | 383H | Glen Robertson | — |
| 2015-08-05 | 343-436 | not yet reported which blocks → | InnSysVoice Corp | 383H | Ingleside | — |
| 2015-08-05 | 343-437 | not yet reported which blocks → | InnSysVoice Corp | 383H | Iroquois | — |
| 2015-08-05 | 343-438 | not yet reported which blocks → | InnSysVoice Corp | 383H | L'Orignal | — |
| 2015-08-05 | 440-903 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHAGRINFLS | OH |
| 2015-08-05 | 470-447 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA | GA |
| 2015-08-05 | 475-439 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ANSONIDRBY | CT |
| 2015-08-05 | 586-252 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | ROSEVILLE | MI |
| 2015-08-05 | 646-617 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NWYRCYZN01 | NY |
| 2015-08-05 | 657-281 | 0–9 XXXall 10 · 7 holders which blocks → | T-MOBILE USA, INC. | 6529 | ORANGE | CA |
| 2015-08-05 | 902-613 | not yet reported which blocks → | TELUS Mobility | 8303 | Parrsboro | — |
| 2015-08-05 | 902-615 | not yet reported which blocks → | TELUS Mobility | 8303 | Inverness | — |
| 2015-08-05 | 902-715 | not yet reported which blocks → | TELUS Mobility | 8303 | Upper Musquodoboit | — |
| 2015-08-05 | 909-314 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2015-08-04 | 202-820 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSHNGTNZN1 | DC |
| 2015-08-04 | 204-714 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Morris | — |
| 2015-08-04 | 217-250 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LITCHFIELD | IL |
| 2015-08-04 | 226-395 | not yet reported which blocks → | Bruce Municipal Telephone System | 038E | Ripley | — |
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.