NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026

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
2020-09-10 440-674 T-MOBILE USA, INC. 6529 ELYRIA OH
2020-09-04 254-408 T-MOBILE USA, INC. 6529 COPPERASCV TX
2020-09-03 213-526 T-MOBILE USA, INC. 6529 MONTEBELLO CA
2020-09-03 916-530 T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-09-01 385-358 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-09-01 951-548 T-MOBILE USA, INC. 6529 RIVERSIDE CA
2020-08-28 210-895 T-MOBILE USA, INC. 6529 SANANTONIO TX
2020-08-28 469-880 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-08-28 469-882 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-08-28 469-883 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2020-08-27 209-693 T-MOBILE USA, INC. 6529 LODI CA
2020-08-27 360-634 T-MOBILE USA, INC. 6529 OLYMPIA WA
2020-08-27 425-371 T-MOBILE USA, INC. 6529 BOTHELL WA
2020-08-27 469-876 T-MOBILE USA, INC. 6529 ENNIS TX
2020-08-27 530-382 T-MOBILE USA, INC. 6529 AUBN MAIN CA
2020-08-27 737-274 T-MOBILE USA, INC. 6529 BASTROP TX
2020-08-27 909-846 T-MOBILE USA, INC. 6529 ARROWHEAD CA
2020-08-26 539-239 T-MOBILE USA, INC. 6529 MUSKOGEE OK
2020-08-26 970-793 T-MOBILE USA, INC. 6529 GREELEY CO
2020-08-25 636-339 T-MOBILE USA, INC. 6529 OFALLON MO
2020-08-25 916-510 T-MOBILE USA, INC. 6529 FOLSOM CA
2020-08-21 209-692 T-MOBILE USA, INC. 6529 SNRA MAIN CA
2020-08-21 909-845 T-MOBILE USA, INC. 6529 CALIMESA CA
2020-08-13 619-706 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-08-13 916-829 T-MOBILE USA, INC. 6529 ELK GROVE CA
2020-08-13 949-594 T-MOBILE USA, INC. 6529 LAGUNA BCH CA
2020-08-12 918-882 T-MOBILE USA, INC. 6529 BROKENARRW OK
2020-08-11 707-870 T-MOBILE USA, INC. 6529 SANTA ROSA CA
2020-08-03 602-727 T-MOBILE USA, INC. 6529 PHOENIX AZ
2020-07-29 307-355 T-MOBILE USA, INC. 6529 LA GRANGE WY
2020-07-29 719-507 T-MOBILE USA, INC. 6529 PUEBLO CO
2020-07-29 970-694 T-MOBILE USA, INC. 6529 FT COLLINS CO
2020-07-28 385-307 T-MOBILE USA, INC. 6529 PROVO UT
2020-07-28 661-503 T-MOBILE USA, INC. 6529 PLDL PLDL CA
2020-07-28 909-817 T-MOBILE USA, INC. 6529 POMONA CA
2020-07-28 909-832 T-MOBILE USA, INC. 6529 S BERNDINO CA
2020-07-17 513-690 T-MOBILE USA, INC. 6529 SEVEN MILE OH
2020-07-15 253-339 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2020-07-09 509-504 T-MOBILE USA, INC. 6529 YAKIMA WA
2020-07-02 442-322 T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-07-01 505-430 T-MOBILE USA, INC. 6529 GALLUP NM
2020-06-16 575-240 T-MOBILE USA, INC. 6529 TAOS NM
2020-06-11 681-268 T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2020-06-04 720-680 T-MOBILE USA, INC. 6529 LONGMONT CO
2020-06-01 681-296 T-MOBILE USA, INC. 6529 MULLENS WV
2020-05-29 505-376 T-MOBILE USA, INC. 6529 ESPANOLA NM
2020-05-28 209-685 T-MOBILE USA, INC. 6529 STOCKTON CA
2020-05-28 253-338 T-MOBILE USA, INC. 6529 AUBURN WA
2020-05-11 520-479 T-MOBILE USA, INC. 6529 TUCSON AZ
2020-03-31 501-403 T-MOBILE USA, INC. 6529 BENTON AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.