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
2001-08-31 509-294 T-MOBILE USA, INC. 6529 SPOKANE WA
2001-08-30 773-744 T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2001-08-30 773-865 T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2001-08-30 773-895 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2001-08-30 773-936 T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2001-08-29 937-508 T-MOBILE USA, INC. 6529 URBANA OH
2001-08-27 214-690 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-08-23 262-343 T-MOBILE USA, INC. 6529 WEST BEND WI
2001-08-23 682-667 T-MOBILE USA, INC. 6529 ARLINGTON TX
2001-08-23 715-302 T-MOBILE USA, INC. 6529 WAUSAU WI
2001-08-23 817-894 T-MOBILE USA, INC. 6529 GRANBURY TX
2001-08-23 937-876 T-MOBILE USA, INC. 6529 GREENFIELD OH
2001-08-22 310-902 T-MOBILE USA, INC. 6529 SNMN MRVS CA
2001-08-22 432-967 T-MOBILE USA, INC. 6529 TERMINAL TX
2001-08-22 626-625 T-MOBILE USA, INC. 6529 ALHAMBRA CA
2001-08-21 515-302 T-MOBILE USA, INC. 6529 FORT DODGE IA
2001-08-21 724-734 T-MOBILE USA, INC. 6529 SHARON PA
2001-08-20 214-830 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-08-20 469-338 T-MOBILE USA, INC. 6529 ROCKWALL TX
2001-08-20 469-667 T-MOBILE USA, INC. 6529 MCKINNEY TX
2001-08-20 501-473 T-MOBILE USA, INC. 6529 SEARCY AR
2001-08-17 208-219 T-MOBILE USA, INC. 6529 BURLEY ID
2001-08-17 309-922 T-MOBILE USA, INC. 6529 PEORIA IL
2001-08-17 435-313 T-MOBILE USA, INC. 6529 ST GEORGE UT
2001-08-17 435-327 T-MOBILE USA, INC. 6529 CEDAR CITY UT
2001-08-17 541-314 T-MOBILE USA, INC. 6529 HERMISTON OR
2001-08-15 505-417 T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2001-08-15 801-716 T-MOBILE USA, INC. 6529 MURRAY UT
2001-08-15 928-542 T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2001-08-14 340-277 T-MOBILE USA, INC. 6529 ST CROIX VI
2001-08-14 340-998 T-MOBILE USA, INC. 6529 CHTAMSTTHS VI
2001-08-09 260-503 T-MOBILE USA, INC. 6529 COLUMBIACY IN
2001-08-09 260-585 T-MOBILE USA, INC. 6529 LAGRANGE IN
2001-08-09 920-265 T-MOBILE USA, INC. 6529 GREEN BAY WI
2001-08-08 773-837 T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2001-08-07 915-269 T-MOBILE USA, INC. 6529 EL PASO TX
2001-08-03 608-448 T-MOBILE USA, INC. 6529 BARABOO WI
2001-08-02 216-323 T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-08-02 515-209 T-MOBILE USA, INC. 6529 WEBSTER CY IA
2001-08-02 641-210 T-MOBILE USA, INC. 6529 MASON CITY IA
2001-08-02 715-304 T-MOBILE USA, INC. 6529 SHAWANO WI
2001-08-02 920-256 T-MOBILE USA, INC. 6529 STURGEONBY WI
2001-07-30 214-735 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-07-24 254-413 T-MOBILE USA, INC. 6529 STEPHENVL TX
2001-07-24 815-791 T-MOBILE USA, INC. 6529 JOLIET IL
2001-07-20 808-216 T-MOBILE USA, INC. 6529 HONOLULU HI
2001-07-20 940-337 T-MOBILE USA, INC. 6529 WICHITAFLS TX
2001-07-18 214-927 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-07-18 715-207 T-MOBILE USA, INC. 6529 MARSHFIELD WI
2001-07-17 575-312 T-MOBILE USA, INC. 6529 LAS CRUCES NM

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.