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
2007-09-28 224-795 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-09-27 702-573 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-09-24 818-277 T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-24 818-290 T-MOBILE USA, INC. 6529 VAN NUYS CA
2007-09-21 314-685 T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-09-21 702-418 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-09-18 210-544 T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-09-18 331-575 T-MOBILE USA, INC. 6529 AURORA IL
2007-09-18 331-643 T-MOBILE USA, INC. 6529 AURORA IL
2007-09-18 469-386 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-09-12 224-637 T-MOBILE USA, INC. 6529 WAUKEGAN IL
2007-09-11 951-229 T-MOBILE USA, INC. 6529 PERRIS CA
2007-09-11 951-230 T-MOBILE USA, INC. 6529 PERRIS CA
2007-09-11 951-234 T-MOBILE USA, INC. 6529 TEMECULA CA
2007-09-07 623-239 T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-09-07 928-315 T-MOBILE USA, INC. 6529 SOMERTON AZ
2007-09-06 405-887 T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-09-05 682-583 T-MOBILE USA, INC. 6529 ARLINGTON TX
2007-09-04 254-251 T-MOBILE USA, INC. 6529 KILLEEN TX
2007-08-29 323-542 T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2007-08-29 714-495 T-MOBILE USA, INC. 6529 ANAHEIM CA
2007-08-29 773-738 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-08-29 773-953 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-08-24 424-232 T-MOBILE USA, INC. 6529 CMTN GRDN CA
2007-08-23 424-230 T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2007-08-23 702-587 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-08-21 224-565 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-08-21 602-503 T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-08-21 773-964 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-08-16 408-600 T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2007-08-15 206-453 T-MOBILE USA, INC. 6529 SEATTLE WA
2007-07-31 405-305 T-MOBILE USA, INC. 6529 OKLA CITY OK
2007-07-24 515-822 T-MOBILE USA, INC. 6529 DES MOINES IA
2007-07-18 801-513 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2007-07-17 773-963 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-07-13 469-432 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-07-13 512-909 T-MOBILE USA, INC. 6529 AUSTIN TX
2007-07-13 830-890 T-MOBILE USA, INC. 6529 KERRVILLE TX
2007-07-12 435-219 T-MOBILE USA, INC. 6529 VERNAL UT
2007-07-12 779-875 T-MOBILE USA, INC. 6529 JOLIET IL
2007-07-11 331-425 T-MOBILE USA, INC. 6529 AURORA IL
2007-07-11 773-971 T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2007-07-10 224-425 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2007-07-10 702-574 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2007-07-10 708-674 T-MOBILE USA, INC. 6529 LA GRANGE IL
2007-07-10 773-691 T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2007-07-09 216-482 T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-07-06 708-595 T-MOBILE USA, INC. 6529 LA GRANGE IL
2007-07-03 323-519 T-MOBILE USA, INC. 6529 MONTEBELLO CA
2007-07-03 323-532 T-MOBILE USA, INC. 6529 LSAN DA 03 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.