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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2007-03-14 253-314 T-MOBILE USA, INC. 6529 TACOMA WA
2007-03-13 515-783 T-MOBILE USA, INC. 6529 DES MOINES IA
2007-03-08 619-534 T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-03-05 773-657 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-03-02 505-592 T-MOBILE USA, INC. 6529 FARMINGTON NM
2007-02-27 801-833 T-MOBILE USA, INC. 6529 SALT LAKE UT
2007-02-24 424-217 T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2007-02-24 714-487 T-MOBILE USA, INC. 6529 WESTMINSTR CA
2007-02-24 909-206 T-MOBILE USA, INC. 6529 MENTONE CA
2007-02-23 702-428 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-02-23 970-582 T-MOBILE USA, INC. 6529 PAGOSA SPG CO
2007-02-21 219-433 T-MOBILE USA, INC. 6529 GARY IN
2007-02-21 773-939 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-02-20 219-256 T-MOBILE USA, INC. 6529 E CHICAGO IN
2007-02-20 708-527 T-MOBILE USA, INC. 6529 HARVEY IL
2007-02-20 971-340 T-MOBILE USA, INC. 6529 PORTLAND OR
2007-02-19 469-274 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-02-19 469-288 T-MOBILE USA, INC. 6529 MCKINNEY TX
2007-02-15 424-216 T-MOBILE USA, INC. 6529 SNMN MRVS CA
2007-02-15 510-230 T-MOBILE USA, INC. 6529 RICHMOND CA
2007-02-12 818-471 T-MOBILE USA, INC. 6529 BRBN BRBN CA
2007-02-08 760-453 T-MOBILE USA, INC. 6529 OCSD OCSD CA
2007-02-08 951-216 T-MOBILE USA, INC. 6529 TEMECULA CA
2007-02-01 702-417 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-01-25 424-215 T-MOBILE USA, INC. 6529 SAN PEDRO CA
2007-01-24 708-548 T-MOBILE USA, INC. 6529 LA GRANGE IL
2007-01-22 210-251 T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-01-22 469-258 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-01-19 619-259 T-MOBILE USA, INC. 6529 NATIONALCY CA
2007-01-19 909-203 T-MOBILE USA, INC. 6529 CHINO CA
2007-01-17 760-296 T-MOBILE USA, INC. 6529 INDIO CA
2007-01-17 951-210 T-MOBILE USA, INC. 6529 PERRIS CA
2007-01-17 951-213 T-MOBILE USA, INC. 6529 RIVERSIDE CA
2007-01-08 430-200 T-MOBILE USA, INC. 6529 TEXARKANA TX
2007-01-08 773-587 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-01-08 773-930 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-01-05 818-447 T-MOBILE USA, INC. 6529 SNFN SNFN CA
2006-12-27 469-237 T-MOBILE USA, INC. 6529 FRISCO TX
2006-12-21 224-856 T-MOBILE USA, INC. 6529 ELGIN IL
2006-12-21 424-213 T-MOBILE USA, INC. 6529 CMTN CMTN CA
2006-12-20 435-282 T-MOBILE USA, INC. 6529 TREMONTON UT
2006-12-19 408-466 T-MOBILE USA, INC. 6529 CAMPBELL CA
2006-12-18 424-210 T-MOBILE USA, INC. 6529 SAN PEDRO CA
2006-12-15 424-212 T-MOBILE USA, INC. 6529 REDONDO CA
2006-12-05 951-207 T-MOBILE USA, INC. 6529 CORONA CA
2006-12-04 424-208 T-MOBILE USA, INC. 6529 W ANGELES CA
2006-12-02 559-389 T-MOBILE USA, INC. 6529 FRESNO CA
2006-11-29 224-587 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-11-21 512-287 T-MOBILE USA, INC. 6529 AUSTIN TX
2006-11-16 316-435 T-MOBILE USA, INC. 6529 EL DORADO KS

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.