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
2023-07-13 840-233 T-MOBILE USA, INC. 6529 ARROWHEAD CA
2023-07-13 949-213 T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2023-07-13 949-775 T-MOBILE USA, INC. 6529 SADLBK VLY CA
2023-07-13 951-641 T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-06-20 945-296 T-MOBILE USA, INC. 6529 FORNEY TX
2023-06-15 725-305 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-06-15 951-632 T-MOBILE USA, INC. 6529 HEMT SNJC CA
2023-06-15 971-452 T-MOBILE USA, INC. 6529 BEAVER OR
2023-06-09 840-232 T-MOBILE USA, INC. 6529 FONTANA CA
2023-05-31 520-435 T-MOBILE USA, INC. 6529 WILLCOX AZ
2023-05-31 840-231 T-MOBILE USA, INC. 6529 POMONA CA
2023-05-19 480-953 T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-05-19 557-203 T-MOBILE USA, INC. 6529 MEHLVILLE MO
2023-05-19 725-303 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-05-08 213-661 T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2023-05-08 341-231 T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2023-05-08 650-661 T-MOBILE USA, INC. 6529 PACIFICA CA
2023-03-17 572-216 T-MOBILE USA, INC. 6529 CHANDLER OK
2023-03-08 636-367 T-MOBILE USA, INC. 6529 TROY MO
2023-02-03 479-492 T-MOBILE USA, INC. 6529 GREENWOOD AR
2023-01-27 425-472 T-MOBILE USA, INC. 6529 BELLEVUE WA
2023-01-27 626-681 T-MOBILE USA, INC. 6529 EL MONTE CA
2023-01-26 385-514 T-MOBILE USA, INC. 6529 OGDEN UT
2023-01-26 682-415 T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-19 747-331 T-MOBILE USA, INC. 6529 GLENDALE CA
2023-01-19 925-506 T-MOBILE USA, INC. 6529 ANTIOCH CA
2023-01-13 253-378 T-MOBILE USA, INC. 6529 AUBURN WA
2023-01-13 971-447 T-MOBILE USA, INC. 6529 CLACKAMAS OR
2023-01-12 725-294 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-01-11 213-619 T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-01-11 350-204 T-MOBILE USA, INC. 6529 ATWATER CA
2023-01-11 405-995 T-MOBILE USA, INC. 6529 HOLDENVL OK
2023-01-11 480-942 T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 602-637 T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 620-606 T-MOBILE USA, INC. 6529 FORT SCOTT KS
2023-01-11 623-212 T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 669-329 T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2023-01-11 747-324 T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2023-01-11 747-329 T-MOBILE USA, INC. 6529 BRBN BRBN CA
2023-01-11 949-712 T-MOBILE USA, INC. 6529 SADLBK VLY CA
2023-01-11 971-443 T-MOBILE USA, INC. 6529 SALEM OR
2023-01-06 254-281 T-MOBILE USA, INC. 6529 KILLEEN TX
2023-01-05 385-512 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2023-01-05 682-403 T-MOBILE USA, INC. 6529 ARLINGTON TX
2023-01-05 682-405 T-MOBILE USA, INC. 6529 ARLINGTON TX
2023-01-05 682-406 T-MOBILE USA, INC. 6529 ARLINGTON TX
2023-01-05 707-956 T-MOBILE USA, INC. 6529 NAPA CA
2023-01-04 234-359 T-MOBILE USA, INC. 6529 AURORA OH
2023-01-04 682-413 T-MOBILE USA, INC. 6529 CLEBURNE TX
2022-12-28 424-485 T-MOBILE USA, INC. 6529 BEVERLYHLS CA

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.