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
2008-03-18 254-350 T-MOBILE USA, INC. 6529 KILLEEN TX
2008-03-18 806-444 T-MOBILE USA, INC. 6529 AMARILLO TX
2008-03-18 806-466 T-MOBILE USA, INC. 6529 LUBBOCK TX
2008-03-06 509-730 T-MOBILE USA, INC. 6529 WALLAWALLA WA
2008-02-29 773-672 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2008-02-29 773-982 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2008-02-21 509-415 T-MOBILE USA, INC. 6529 WENATCHEE WA
2008-02-15 253-327 T-MOBILE USA, INC. 6529 TACOMA WA
2008-02-06 304-356 T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2008-01-29 608-351 T-MOBILE USA, INC. 6529 WEST SALEM WI
2008-01-29 619-600 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2008-01-17 775-461 T-MOBILE USA, INC. 6529 CARSONCITY NV
2008-01-14 210-589 T-MOBILE USA, INC. 6529 SANANTONIO TX
2008-01-14 469-531 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2008-01-14 469-563 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2008-01-14 682-227 T-MOBILE USA, INC. 6529 ARLINGTON TX
2008-01-09 779-456 T-MOBILE USA, INC. 6529 JOLIET IL
2008-01-07 773-747 T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-07 773-969 T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-31 530-615 T-MOBILE USA, INC. 6529 GRVY MAIN CA
2007-12-11 712-578 T-MOBILE USA, INC. 6529 HULL IA
2007-12-05 512-650 T-MOBILE USA, INC. 6529 AUSTIN TX
2007-12-01 217-940 T-MOBILE USA, INC. 6529 TAYLORVL IL
2007-11-27 773-226 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-11-27 773-941 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-11-19 702-503 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-11-09 805-263 T-MOBILE USA, INC. 6529 OXNARD CA
2007-11-07 314-546 T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-11-07 440-654 T-MOBILE USA, INC. 6529 LORAIN OH
2007-11-06 512-903 T-MOBILE USA, INC. 6529 AUSTIN TX
2007-11-05 331-645 T-MOBILE USA, INC. 6529 ELMHURST IL
2007-10-31 773-886 T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2007-10-27 619-569 T-MOBILE USA, INC. 6529 EL CAJON CA
2007-10-26 773-543 T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-10-25 435-374 T-MOBILE USA, INC. 6529 LOGAN UT
2007-10-25 801-425 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2007-10-17 773-639 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-10-17 773-647 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-10-16 773-240 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-10-16 773-986 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-10-16 773-996 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-10-11 708-890 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2007-10-10 262-393 T-MOBILE USA, INC. 6529 ALLENTON WI
2007-10-10 323-703 T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2007-10-08 253-326 T-MOBILE USA, INC. 6529 AUBURN WA
2007-10-05 253-324 T-MOBILE USA, INC. 6529 TACOMA WA
2007-10-01 702-750 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-09-29 224-343 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-09-29 224-548 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-09-28 224-387 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL

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.