NumberResearch Membership · Data 2026-04

Recent prefix assignments

5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
T-MOBILE USA, INC. 5
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2005-04-19 702-677 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-04-19 773-699 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-04-08 702-415 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-04-07 951-581 T-MOBILE USA, INC. 6529 PERRIS CA
2005-03-30 909-684 T-MOBILE USA, INC. 6529 FONTANA CA
2005-03-30 951-445 T-MOBILE USA, INC. 6529 MURRIETA CA
2005-03-28 210-818 T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-03-28 224-538 T-MOBILE USA, INC. 6529 WAUKEGAN IL
2005-03-28 773-816 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2005-03-25 702-544 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-03-24 210-454 T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-03-22 630-903 T-MOBILE USA, INC. 6529 ELMHURST IL
2005-03-10 971-533 T-MOBILE USA, INC. 6529 PORTLAND OR
2005-03-08 773-885 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-02-23 760-844 T-MOBILE USA, INC. 6529 PALM SPG CA
2005-02-22 310-561 T-MOBILE USA, INC. 6529 TORRANCE CA
2005-02-21 224-377 T-MOBILE USA, INC. 6529 HALF DAY IL
2005-02-21 773-678 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-02-18 224-388 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-02-18 559-776 T-MOBILE USA, INC. 6529 FRESNO CA
2005-02-18 618-447 T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-16 630-806 T-MOBILE USA, INC. 6529 AURORA IL
2005-02-16 847-346 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-02-14 310-987 T-MOBILE USA, INC. 6529 SAN PEDRO CA
2005-02-09 469-328 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2005-02-02 408-726 T-MOBILE USA, INC. 6529 SNJS NORTH CA
2005-02-02 619-632 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-02-02 619-793 T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-01-28 480-678 T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-01-26 503-442 T-MOBILE USA, INC. 6529 PORTLAND OR
2005-01-24 480-252 T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-01-12 702-377 T-MOBILE USA, INC. 6529 OVERTON NV
2005-01-12 702-424 T-MOBILE USA, INC. 6529 UPPERMUDDY NV
2005-01-10 773-559 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-01-05 808-457 T-MOBILE USA, INC. 6529 HONOLULU HI
2005-01-03 310-986 T-MOBILE USA, INC. 6529 LOMITA CA
2005-01-03 909-697 T-MOBILE USA, INC. 6529 FONTANA CA
2004-12-29 909-327 T-MOBILE USA, INC. 6529 S BERNDINO CA
2004-12-28 773-540 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-12-16 909-743 T-MOBILE USA, INC. 6529 FONTANA CA
2004-12-15 806-939 T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-12-15 951-623 T-MOBILE USA, INC. 6529 PERRIS CA
2004-12-09 480-277 T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-11-24 224-220 T-MOBILE USA, INC. 6529 DESPLAINES IL
2004-11-23 951-526 T-MOBILE USA, INC. 6529 TEMECULA CA
2004-11-22 217-506 T-MOBILE USA, INC. 6529 QUINCY IL
2004-11-22 224-210 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-11-19 575-497 T-MOBILE USA, INC. 6529 TRUTHCQNCS NM
2004-11-19 806-717 T-MOBILE USA, INC. 6529 DUMAS TX
2004-11-17 773-503 T-MOBILE USA, INC. 6529 CHICGOZN10 IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.