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
573-514 T-MOBILE USA, INC. 6529 COLUMBIA MO
573-529 T-MOBILE USA, INC. 6529 COLUMBIA MO
573-537 T-MOBILE USA, INC. 6529 ROLLA MO
573-587 T-MOBILE USA, INC. 6529 CAPEGIRARD MO
573-639 T-MOBILE USA, INC. 6529 COLUMBIA MO
573-647 T-MOBILE USA, INC. 6529 ROLLA MO
573-673 T-MOBILE USA, INC. 6529 COLUMBIA MO
573-795 T-MOBILE USA, INC. 6529 HANNIBAL MO
573-797 T-MOBILE USA, INC. 6529 JEFFERSNCY MO
573-832 T-MOBILE USA, INC. 6529 VERSAILLES MO
573-872 T-MOBILE USA, INC. 6529 POPLAR BLF MO
573-931 T-MOBILE USA, INC. 6529 SIKESTON MO
575-231 T-MOBILE USA, INC. 6529 ARTESIA NM
575-308 T-MOBILE USA, INC. 6529 ARTESIA NM
575-442 T-MOBILE USA, INC. 6529 ALAMOGORDO NM
575-493 T-MOBILE USA, INC. 6529 LORDSBURG NM
575-495 T-MOBILE USA, INC. 6529 ALAMOGORDO NM
575-496 T-MOBILE USA, INC. 6529 LAS CRUCES NM
575-571 T-MOBILE USA, INC. 6529 LAS CRUCES NM
575-621 T-MOBILE USA, INC. 6529 LAS CRUCES NM
575-650 T-MOBILE USA, INC. 6529 LAS CRUCES NM
575-693 T-MOBILE USA, INC. 6529 CLOVIS NM
575-993 T-MOBILE USA, INC. 6529 LAS CRUCES NM
580-210 T-MOBILE USA, INC. 6529 ELK CITY OK
580-275 T-MOBILE USA, INC. 6529 CLINTON OK
580-277 T-MOBILE USA, INC. 6529 ARDMORE OK
580-278 T-MOBILE USA, INC. 6529 ENID OK
580-280 T-MOBILE USA, INC. 6529 LAWTON OK
580-284 T-MOBILE USA, INC. 6529 LAWTON OK
580-340 T-MOBILE USA, INC. 6529 ARDMORE OK
580-341 T-MOBILE USA, INC. 6529 ARDMORE OK
580-375 T-MOBILE USA, INC. 6529 WEATHERFD OK
580-401 T-MOBILE USA, INC. 6529 PONCA CITY OK
580-402 T-MOBILE USA, INC. 6529 ENID OK
580-484 T-MOBILE USA, INC. 6529 ENID OK
580-485 T-MOBILE USA, INC. 6529 PONCA CITY OK
580-491 T-MOBILE USA, INC. 6529 PONCA CITY OK
580-771 T-MOBILE USA, INC. 6529 LAWTON OK
580-818 T-MOBILE USA, INC. 6529 ARDMORE OK
580-850 T-MOBILE USA, INC. 6529 ARDMORE OK
602-214 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-295 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-301 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-312 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-318 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-326 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-330 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-332 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-354 T-MOBILE USA, INC. 6529 PHOENIX AZ
602-369 T-MOBILE USA, INC. 6529 PHOENIX AZ

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.