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
2016-05-12 909-413 T-MOBILE USA, INC. 6529 CHINO CA
2016-05-09 309-954 T-MOBILE USA, INC. 6529 MACOMB IL
2016-05-05 217-695 T-MOBILE USA, INC. 6529 QUINCY IL
2016-05-05 618-517 T-MOBILE USA, INC. 6529 OLNEY IL
2016-05-05 870-360 T-MOBILE USA, INC. 6529 PINE BLUFF AR
2016-05-02 626-360 T-MOBILE USA, INC. 6529 PSDN PSDN CA
2016-05-02 682-256 T-MOBILE USA, INC. 6529 ARLINGTON TX
2016-04-29 424-308 T-MOBILE USA, INC. 6529 SAN PEDRO CA
2016-04-29 509-608 T-MOBILE USA, INC. 6529 SPOKANE WA
2016-04-29 562-302 T-MOBILE USA, INC. 6529 DOWNEY CA
2016-04-29 650-250 T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-04-29 915-259 T-MOBILE USA, INC. 6529 EL PASO TX
2016-04-21 602-517 T-MOBILE USA, INC. 6529 PHOENIX AZ
2016-04-21 623-230 T-MOBILE USA, INC. 6529 PHOENIX AZ
2016-04-21 707-305 T-MOBILE USA, INC. 6529 VACAVILLE CA
2016-04-14 214-903 T-MOBILE USA, INC. 6529 WAXAHACHIE TX
2016-04-07 469-494 T-MOBILE USA, INC. 6529 ENNIS TX
2016-04-06 209-702 T-MOBILE USA, INC. 6529 MODESTO CA
2016-04-01 253-240 T-MOBILE USA, INC. 6529 TACOMA WA
2016-04-01 385-251 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2016-04-01 510-707 T-MOBILE USA, INC. 6529 OKLD TRNID CA
2016-04-01 559-601 T-MOBILE USA, INC. 6529 CARUTHERS CA
2016-04-01 628-202 T-MOBILE USA, INC. 6529 BELVEDERE CA
2016-04-01 669-204 T-MOBILE USA, INC. 6529 SNJS WEST CA
2016-04-01 949-506 T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2016-03-25 406-304 T-MOBILE USA, INC. 6529 MISSOULA MT
2016-03-24 210-926 T-MOBILE USA, INC. 6529 SANANTONIO TX
2016-03-24 214-430 T-MOBILE USA, INC. 6529 FRISCO TX
2016-03-23 214-817 T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2016-03-23 509-596 T-MOBILE USA, INC. 6529 CLARKSTON WA
2016-03-22 254-278 T-MOBILE USA, INC. 6529 COPPERASCV TX
2016-03-22 623-213 T-MOBILE USA, INC. 6529 PHOENIX AZ
2016-03-17 312-825 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-03-17 331-300 T-MOBILE USA, INC. 6529 AURORA IL
2016-03-17 708-677 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2016-03-16 720-419 T-MOBILE USA, INC. 6529 DENVER CO
2016-03-14 520-244 T-MOBILE USA, INC. 6529 TUCSON AZ
2016-03-14 916-507 T-MOBILE USA, INC. 6529 SCRM NORTH CA
2016-03-11 442-202 T-MOBILE USA, INC. 6529 BRAWLEY CA
2016-03-09 323-616 T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2016-03-09 669-203 T-MOBILE USA, INC. 6529 CAMPBELL CA
2016-03-07 206-771 T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-04 628-237 T-MOBILE USA, INC. 6529 SAUSALITO CA
2016-03-04 657-321 T-MOBILE USA, INC. 6529 SANTA ANA CA
2016-03-04 951-405 T-MOBILE USA, INC. 6529 RIVERSIDE CA
2016-03-02 208-912 T-MOBILE USA, INC. 6529 BOISE ID
2016-02-04 628-236 T-MOBILE USA, INC. 6529 NOVATO CA
2016-01-27 602-668 T-MOBILE USA, INC. 6529 PHOENIX AZ
2016-01-22 360-763 T-MOBILE USA, INC. 6529 OLYMPIA WA
2016-01-21 253-433 T-MOBILE USA, INC. 6529 TACOMA WA

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.