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

Recent NPA-NXX prefix assignments
NPA-NXX	Assignee	OCN	Rate center	State
915-346	T-MOBILE USA, INC.	6529	EL PASO	TX
915-355	T-MOBILE USA, INC.	6529	EL PASO	TX
915-373	T-MOBILE USA, INC.	6529	EL PASO	TX
915-383	T-MOBILE USA, INC.	6529	EL PASO	TX
915-422	T-MOBILE USA, INC.	6529	EL PASO	TX
915-433	T-MOBILE USA, INC.	6529	EL PASO	TX
915-630	T-MOBILE USA, INC.	6529	EL PASO	TX
915-726	T-MOBILE USA, INC.	6529	EL PASO	TX
915-727	T-MOBILE USA, INC.	6529	EL PASO	TX
915-731	T-MOBILE USA, INC.	6529	EL PASO	TX
915-740	T-MOBILE USA, INC.	6529	EL PASO	TX
915-799	T-MOBILE USA, INC.	6529	EL PASO	TX
915-820	T-MOBILE USA, INC.	6529	EL PASO	TX
915-867	T-MOBILE USA, INC.	6529	EL PASO	TX
915-873	T-MOBILE USA, INC.	6529	EL PASO	TX
915-920	T-MOBILE USA, INC.	6529	EL PASO	TX
916-270	T-MOBILE USA, INC.	6529	WALNUT GRV	CA
916-346	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
916-579	T-MOBILE USA, INC.	6529	FAIR OAKS	CA
916-620	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
918-213	T-MOBILE USA, INC.	6529	BARTLESVL	OK
918-269	T-MOBILE USA, INC.	6529	TULSA	OK
918-271	T-MOBILE USA, INC.	6529	TULSA	OK
918-289	T-MOBILE USA, INC.	6529	TULSA	OK
918-320	T-MOBILE USA, INC.	6529	MIAMI	OK
918-327	T-MOBILE USA, INC.	6529	BARTLESVL	OK
918-329	T-MOBILE USA, INC.	6529	MCALESTER	OK
918-340	T-MOBILE USA, INC.	6529	TULSA	OK
918-350	T-MOBILE USA, INC.	6529	BARTLESVL	OK
918-360	T-MOBILE USA, INC.	6529	MUSKOGEE	OK
918-361	T-MOBILE USA, INC.	6529	TULSA	OK
918-406	T-MOBILE USA, INC.	6529	TULSA	OK
918-407	T-MOBILE USA, INC.	6529	TULSA	OK
918-408	T-MOBILE USA, INC.	6529	TULSA	OK
918-409	T-MOBILE USA, INC.	6529	TULSA	OK
918-442	T-MOBILE USA, INC.	6529	TULSA	OK
918-537	T-MOBILE USA, INC.	6529	MUSKOGEE	OK
918-777	T-MOBILE USA, INC.	6529	OKMULGEE	OK
918-808	T-MOBILE USA, INC.	6529	TULSA	OK
918-809	T-MOBILE USA, INC.	6529	TULSA	OK
918-810	T-MOBILE USA, INC.	6529	TULSA	OK
918-812	T-MOBILE USA, INC.	6529	TULSA	OK
918-813	T-MOBILE USA, INC.	6529	TULSA	OK
918-814	T-MOBILE USA, INC.	6529	TULSA	OK
918-815	T-MOBILE USA, INC.	6529	BARTLESVL	OK
918-816	T-MOBILE USA, INC.	6529	MUSKOGEE	OK
918-830	T-MOBILE USA, INC.	6529	TULSA	OK
918-840	T-MOBILE USA, INC.	6529	MUSKOGEE	OK
918-841	T-MOBILE USA, INC.	6529	BARTLESVL	OK
918-850	T-MOBILE USA, INC.	6529	TULSA	OK

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.