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
2001-12-28 916-230 T-MOBILE USA, INC. 6529 ELK GROVE CA
2001-12-28 925-325 T-MOBILE USA, INC. 6529 ANTIOCH CA
2001-12-28 949-295 T-MOBILE USA, INC. 6529 LAGUNA BCH CA
2001-12-28 949-310 T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2001-12-28 951-545 T-MOBILE USA, INC. 6529 CORONA CA
2001-12-28 951-858 T-MOBILE USA, INC. 6529 CORONA CA
2001-12-27 619-254 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2001-12-27 619-274 T-MOBILE USA, INC. 6529 NATIONALCY CA
2001-12-27 619-277 T-MOBILE USA, INC. 6529 EL CAJON CA
2001-12-27 626-215 T-MOBILE USA, INC. 6529 ARCADIA CA
2001-12-27 626-216 T-MOBILE USA, INC. 6529 ALHAMBRA CA
2001-12-27 650-278 T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2001-12-27 650-283 T-MOBILE USA, INC. 6529 PALO ALTO CA
2001-12-27 650-307 T-MOBILE USA, INC. 6529 MILLBRAE CA
2001-12-27 650-430 T-MOBILE USA, INC. 6529 SAN MATEO CA
2001-12-27 714-553 T-MOBILE USA, INC. 6529 ANAHEIM CA
2001-12-26 209-200 T-MOBILE USA, INC. 6529 LODI CA
2001-12-26 209-204 T-MOBILE USA, INC. 6529 MODESTO CA
2001-12-26 310-925 T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2001-12-26 323-304 T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2001-12-26 408-310 T-MOBILE USA, INC. 6529 MORGANHILL CA
2001-12-26 415-299 T-MOBILE USA, INC. 6529 SAN RAFAEL CA
2001-12-26 415-320 T-MOBILE USA, INC. 6529 NOVATO CA
2001-12-26 510-282 T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2001-12-26 510-375 T-MOBILE USA, INC. 6529 RICHMOND CA
2001-12-26 510-396 T-MOBILE USA, INC. 6529 FRNK MAIN CA
2001-12-26 530-220 T-MOBILE USA, INC. 6529 DAVIS CA
2001-12-26 530-312 T-MOBILE USA, INC. 6529 WOODLAND CA
2001-12-26 559-309 T-MOBILE USA, INC. 6529 HANFORD CA
2001-12-19 314-456 T-MOBILE USA, INC. 6529 LADUE MO
2001-12-18 541-264 T-MOBILE USA, INC. 6529 NEWPORT OR
2001-12-17 216-240 T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-12-17 702-287 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2001-12-17 808-330 T-MOBILE USA, INC. 6529 HONOLULU HI
2001-12-14 405-788 T-MOBILE USA, INC. 6529 SHAWNEE OK
2001-12-14 661-317 T-MOBILE USA, INC. 6529 PLDL PLDL CA
2001-12-14 661-373 T-MOBILE USA, INC. 6529 SNCA NHCS CA
2001-12-14 661-472 T-MOBILE USA, INC. 6529 BKFD MAIN CA
2001-12-14 831-295 T-MOBILE USA, INC. 6529 SANTA CRUZ CA
2001-12-14 831-297 T-MOBILE USA, INC. 6529 HOLLISTER CA
2001-12-14 831-406 T-MOBILE USA, INC. 6529 WATSONVL CA
2001-12-14 858-231 T-MOBILE USA, INC. 6529 POWAY CA
2001-12-14 858-405 T-MOBILE USA, INC. 6529 LA JOLLA CA
2001-12-05 480-226 T-MOBILE USA, INC. 6529 PHOENIX AZ
2001-12-03 503-470 T-MOBILE USA, INC. 6529 SEASIDE OR
2001-11-30 773-615 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2001-11-30 949-596 T-MOBILE USA, INC. 6529 IRVINE CA
2001-11-29 818-674 T-MOBILE USA, INC. 6529 RESEDA CA
2001-11-29 909-964 T-MOBILE USA, INC. 6529 CLAREMONT CA
2001-11-28 209-534 T-MOBILE USA, INC. 6529 MODESTO CA

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.