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
2001-04-24 719-231 T-MOBILE USA, INC. 6529 COLORDOSPG CO
2001-04-24 719-232 T-MOBILE USA, INC. 6529 COLORDOSPG CO
2001-04-24 719-406 T-MOBILE USA, INC. 6529 PUEBLO CO
2001-04-24 916-475 T-MOBILE USA, INC. 6529 SCRM MAIN CA
2001-04-24 970-404 T-MOBILE USA, INC. 6529 GLENWD SPG CO
2001-04-24 970-405 T-MOBILE USA, INC. 6529 GREELEY CO
2001-04-23 650-468 T-MOBILE USA, INC. 6529 PALO ALTO CA
2001-04-23 805-284 T-MOBILE USA, INC. 6529 SANBARBARA CA
2001-04-23 951-551 T-MOBILE USA, INC. 6529 TEMECULA CA
2001-04-20 510-455 T-MOBILE USA, INC. 6529 CROCKETT CA
2001-04-19 630-878 T-MOBILE USA, INC. 6529 LA GRANGE IL
2001-04-19 630-973 T-MOBILE USA, INC. 6529 ROSELLE IL
2001-04-19 720-319 T-MOBILE USA, INC. 6529 DENVER CO
2001-04-19 773-842 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2001-04-19 805-409 T-MOBILE USA, INC. 6529 THOUSAOAKS CA
2001-04-18 210-336 T-MOBILE USA, INC. 6529 SANANTONIO TX
2001-04-18 920-313 T-MOBILE USA, INC. 6529 LOMIRA WI
2001-04-18 920-316 T-MOBILE USA, INC. 6529 OOSTBURG WI
2001-04-17 714-391 T-MOBILE USA, INC. 6529 ANAHEIM CA
2001-04-17 814-388 T-MOBILE USA, INC. 6529 FRANKLIN PA
2001-04-16 253-222 T-MOBILE USA, INC. 6529 TACOMA WA
2001-04-16 253-223 T-MOBILE USA, INC. 6529 TACOMA WA
2001-04-16 253-224 T-MOBILE USA, INC. 6529 TACOMA WA
2001-04-16 253-332 T-MOBILE USA, INC. 6529 AUBURN WA
2001-04-16 262-302 T-MOBILE USA, INC. 6529 THIENSVL WI
2001-04-16 304-395 T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2001-04-16 360-224 T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2001-04-16 360-421 T-MOBILE USA, INC. 6529 MT VERNON WA
2001-04-16 360-440 T-MOBILE USA, INC. 6529 BREMERTON WA
2001-04-16 360-556 T-MOBILE USA, INC. 6529 OLYMPIA WA
2001-04-16 360-672 T-MOBILE USA, INC. 6529 OAK HARBOR WA
2001-04-16 360-888 T-MOBILE USA, INC. 6529 OLYMPIA WA
2001-04-16 425-343 T-MOBILE USA, INC. 6529 EVERETT WA
2001-04-16 425-344 T-MOBILE USA, INC. 6529 EVERETT WA
2001-04-16 425-737 T-MOBILE USA, INC. 6529 EVERETT WA
2001-04-16 425-770 T-MOBILE USA, INC. 6529 BOTHELL WA
2001-04-16 928-486 T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2001-04-16 970-393 T-MOBILE USA, INC. 6529 VAIL CO
2001-04-12 562-253 T-MOBILE USA, INC. 6529 LONG BEACH CA
2001-04-10 208-243 T-MOBILE USA, INC. 6529 IDAHOFALLS ID
2001-04-10 319-209 T-MOBILE USA, INC. 6529 BURLINGTON IA
2001-04-09 630-863 T-MOBILE USA, INC. 6529 LEMONT IL
2001-04-09 712-203 T-MOBILE USA, INC. 6529 SIOUX CITY IA
2001-04-09 920-277 T-MOBILE USA, INC. 6529 APPLETON WI
2001-04-05 719-213 T-MOBILE USA, INC. 6529 COLORDOSPG CO
2001-04-04 217-712 T-MOBILE USA, INC. 6529 PARIS IL
2001-04-04 217-816 T-MOBILE USA, INC. 6529 SPRINGFLD IL
2001-04-03 208-403 T-MOBILE USA, INC. 6529 IDAHOFALLS ID
2001-04-03 208-405 T-MOBILE USA, INC. 6529 PAYETTE ID
2001-04-03 208-406 T-MOBILE USA, INC. 6529 POCATELLO ID

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.