Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 19

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
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2016-11-08	321-423	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	COCOA	FL
2016-11-08	463-201	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	INDIANAPLS	IN
2016-11-08	469-974	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PLANO	TX
2016-11-08	475-233	0–9 XXXall 10 · 8 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WATERBURY	CT
2016-11-08	506-317	not yet reported which blocks →	Distributel	081E	Moncton	—
2016-11-08	517-234	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HOWELL	MI
2016-11-08	586-305	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MT CLEMENS	MI
2016-11-08	587-305	not yet reported which blocks →	Distributel	081E	Stony Plain	—
2016-11-07	208-803	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	BOISE	ID
2016-11-07	226-819	not yet reported which blocks →	Mornington Communications Co-operative Ltd.	400E	Wellesley	—
2016-11-07	346-763	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX
2016-11-07	669-215	0–9 XXXall 10 · 8 holders which blocks →	T-MOBILE USA, INC.	6529	SUNNYVALE	CA
2016-11-07	920-454	0–9 XXXall 10 · 3 holders which blocks →	TDS METROCOM, LLC	520K	APPLETON	WI
2016-11-04	209-804	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ESCALON	CA
2016-11-04	249-593	not yet reported which blocks →	TELUS Mobility	8303	Alliston	—
2016-11-04	365-997	not yet reported which blocks →	TELUS Mobility	8303	Brampton	—
2016-11-04	417-370	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	SPRINGFLD	MO
2016-11-04	646-968	0–9 XXXall 10 · 6 holders which blocks →	AIRUS, INC. - NY	363H	NWYRCYZN01	NY
2016-11-04	747-276	0–9 XXXall 10 · 8 holders which blocks →	T-MOBILE USA, INC.	6529	VAN NUYS	CA
2016-11-04	762-226	0–9 XXXall 10 · 4 holders which blocks →	RTC SOLUTIONS, INC. - GA	271E	DALTON	GA
2016-11-03	248-954	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MI
2016-11-03	269-243	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	BATTLE CRK	MI
2016-11-03	317-734	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	INDIANAPLS	IN
2016-11-03	346-719	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2016-11-03	431-738	not yet reported which blocks →	TELUS Mobility	8303	Dauphin	—
2016-11-03	431-739	not yet reported which blocks →	TELUS Mobility	8303	Ste. Rose du Lac	—
2016-11-03	431-740	not yet reported which blocks →	TELUS Mobility	8303	Deloraine	—
2016-11-03	431-741	not yet reported which blocks →	TELUS Mobility	8303	Melita	—
2016-11-03	431-742	not yet reported which blocks →	TELUS Mobility	8303	Morris	—
2016-11-03	431-743	not yet reported which blocks →	TELUS Mobility	8303	Swan River	—
2016-11-03	431-744	not yet reported which blocks →	TELUS Mobility	8303	Churchill	—
2016-11-03	431-745	not yet reported which blocks →	TELUS Mobility	8303	Cross Lake	—
2016-11-03	431-746	not yet reported which blocks →	TELUS Mobility	8303	Flin Flon	—
2016-11-03	431-747	not yet reported which blocks →	TELUS Mobility	8303	Gillam	—
2016-11-03	431-748	not yet reported which blocks →	TELUS Mobility	8303	Norway House	—
2016-11-03	431-749	not yet reported which blocks →	TELUS Mobility	8303	Oxford House	—
2016-11-03	431-750	not yet reported which blocks →	TELUS Mobility	8303	Snow Lake	—
2016-11-03	431-751	not yet reported which blocks →	TELUS Mobility	8303	Split Lake	—
2016-11-03	431-752	not yet reported which blocks →	TELUS Mobility	8303	St. Theresa Point	—
2016-11-03	431-753	not yet reported which blocks →	TELUS Mobility	8303	The Pas	—
2016-11-03	431-754	not yet reported which blocks →	TELUS Mobility	8303	Thompson	—
2016-11-03	431-755	not yet reported which blocks →	TELUS Mobility	8303	Boissevain	—
2016-11-03	431-756	not yet reported which blocks →	TELUS Mobility	8303	Clear Lake	—
2016-11-03	431-757	not yet reported which blocks →	TELUS Mobility	8303	Hamiota	—
2016-11-03	431-758	not yet reported which blocks →	TELUS Mobility	8303	Minnedosa	—
2016-11-03	431-759	not yet reported which blocks →	TELUS Mobility	8303	Neepawa	—
2016-11-03	431-760	not yet reported which blocks →	TELUS Mobility	8303	Roblin	—
2016-11-03	431-761	not yet reported which blocks →	TELUS Mobility	8303	Russell	—
2016-11-03	431-762	not yet reported which blocks →	TELUS Mobility	8303	Strathclair	—
2016-11-03	431-763	not yet reported which blocks →	TELUS Mobility	8303	Virden	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.