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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2023-11-08 626-719 T-MOBILE USA, INC. 6529 EL MONTE CA
2023-11-08 840-247 T-MOBILE USA, INC. 6529 HIGHLAND CA
2023-11-07 737-363 T-MOBILE USA, INC. 6529 AUSTIN TX
2023-11-07 940-364 T-MOBILE USA, INC. 6529 DENTON TX
2023-11-07 945-310 T-MOBILE USA, INC. 6529 MCKINNEY TX
2023-11-01 279-246 T-MOBILE USA, INC. 6529 RIO LINDA CA
2023-11-01 341-240 T-MOBILE USA, INC. 6529 HAYWARD CA
2023-11-01 840-246 T-MOBILE USA, INC. 6529 ETIWANDA CA
2023-10-31 210-726 T-MOBILE USA, INC. 6529 SANANTONIO TX
2023-10-31 210-786 T-MOBILE USA, INC. 6529 SANANTONIO TX
2023-10-31 531-349 T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2023-10-25 940-363 T-MOBILE USA, INC. 6529 LAKEDALLAS TX
2023-10-25 945-308 T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-20 808-642 T-MOBILE USA, INC. 6529 HILO HI
2023-10-20 808-663 T-MOBILE USA, INC. 6529 LIHUE HI
2023-10-18 279-245 T-MOBILE USA, INC. 6529 FOLSOM CA
2023-10-18 369-213 T-MOBILE USA, INC. 6529 HEALDSBURG CA
2023-10-18 840-245 T-MOBILE USA, INC. 6529 REDLANDS CA
2023-10-17 254-538 T-MOBILE USA, INC. 6529 MARLIN TX
2023-10-16 442-429 T-MOBILE USA, INC. 6529 YUCCA VLY CA
2023-10-16 442-430 T-MOBILE USA, INC. 6529 VISTA CA
2023-10-16 840-244 T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2023-10-10 213-756 T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2023-10-10 369-212 T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2023-10-10 650-220 T-MOBILE USA, INC. 6529 MT VIEW CA
2023-10-10 657-705 T-MOBILE USA, INC. 6529 CYPRESS CA
2023-10-10 840-243 T-MOBILE USA, INC. 6529 POMONA CA
2023-10-10 858-389 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2023-10-10 949-803 T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2023-10-10 971-468 T-MOBILE USA, INC. 6529 DALLAS OR
2023-10-04 430-344 T-MOBILE USA, INC. 6529 GREENVILLE TX
2023-09-29 557-212 T-MOBILE USA, INC. 6529 MEHLVILLE MO
2023-09-29 657-698 T-MOBILE USA, INC. 6529 WESTMINSTR CA
2023-09-28 707-250 T-MOBILE USA, INC. 6529 VALLEJO CA
2023-09-26 213-728 T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2023-09-26 213-729 T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-734 T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2023-09-26 530-972 T-MOBILE USA, INC. 6529 REDDING CA
2023-09-26 562-707 T-MOBILE USA, INC. 6529 NORWALK CA
2023-09-26 657-695 T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2023-09-26 708-412 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2023-09-26 951-649 T-MOBILE USA, INC. 6529 ARLINGTON CA
2023-09-25 971-997 T-MOBILE USA, INC. 6529 PORTLAND OR
2023-09-21 213-721 T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2023-09-19 682-421 T-MOBILE USA, INC. 6529 CLEBURNE TX
2023-09-19 945-305 T-MOBILE USA, INC. 6529 ROCKWALL TX
2023-08-31 253-386 T-MOBILE USA, INC. 6529 PUYALLUP WA
2023-08-31 971-459 T-MOBILE USA, INC. 6529 CLACKAMAS OR
2023-08-30 440-518 T-MOBILE USA, INC. 6529 AVON LAKE OH
2023-08-29 725-312 T-MOBILE USA, INC. 6529 LAS VEGAS NV

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.