Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2011-06-13	971-263	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PORTLAND	OR
2011-06-10	219-237	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF INDIANA, LLC - IN	279F	HIGHLAND	IN
2011-06-10	317-296	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	INDIANAPLS	IN
2011-06-10	413-799	0–9 XXXall 10 · 2 holders which blocks →	CRC COMMUNICATIONS OF MAINE, INC. - MA	236F	SPRINGFLD	MA
2011-06-10	609-358	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	TRENTON	NJ
2011-06-10	716-391	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	LANCASTER	NY
2011-06-10	803-297	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	COLUMBIA	SC
2011-06-09	226-213	not yet reported which blocks →	Distributel	082E	London	—
2011-06-09	226-214	not yet reported which blocks →	Distributel	082E	Kitchener-Waterloo	—
2011-06-09	289-948	not yet reported which blocks →	Distributel	082E	Brampton	—
2011-06-09	289-949	not yet reported which blocks →	Distributel	082E	Hamilton	—
2011-06-09	347-978	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN05	NY
2011-06-09	406-361	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	HAMILTON	MT
2011-06-09	414-388	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	MILWAUKZN1	WI
2011-06-09	518-662	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	GREENVILLE	NY
2011-06-09	540-627	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ROANOKE	VA
2011-06-09	575-315	0–9 XXXall 10 · 6 holders which blocks →	VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW	1193	RUIDOSO	NM
2011-06-09	587-687	not yet reported which blocks →	Distributel	081E	Edmonton	—
2011-06-09	587-688	not yet reported which blocks →	Distributel	081E	Edmonton	—
2011-06-09	631-464	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	AMITYVILLE	NY
2011-06-09	778-746	not yet reported which blocks →	Distributel	081E	Victoria	—
2011-06-09	786-233	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF FLORIDA, LLC - FL	902E	MIAMI	FL
2011-06-09	786-241	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2011-06-09	901-220	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	MEMPHIS	TN
2011-06-08	206-512	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	SEATTLE	WA
2011-06-08	207-274	0–9 XXXall 10 · 6 holders which blocks →	BELL ATLANTIC MOBILE, INC	6386	PORTLAND	ME
2011-06-08	213-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	LSAN DA 01	CA
2011-06-08	226-212	not yet reported which blocks →	Iristel Inc.	154E	St. Thomas	—
2011-06-08	229-565	0–9 XXXwhole prefix which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	ALBANY	GA
2011-06-08	248-392	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	PONTIAC	MI
2011-06-08	252-302	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NC	3235	MOYOCK	NC
2011-06-08	310-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	BEVERLYHLS	CA
2011-06-08	323-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	LSAN DA 14	CA
2011-06-08	347-947	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN05	NY
2011-06-08	347-957	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN06	NY
2011-06-08	347-977	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN07	NY
2011-06-08	347-997	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN10	NY
2011-06-08	402-739	0–9 XXXall 10 · 6 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	OMAHA	NE
2011-06-08	408-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	XXXXXXXXXX	CA
2011-06-08	415-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	SNFC CNTRL	CA
2011-06-08	504-221	0–9 XXXall 10 · 5 holders which blocks →	VOICESTREAM GSM I, LLC	150C	KENNER	LA
2011-06-08	510-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	OKLD BKLY	CA
2011-06-08	609-349	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	TRENTON	NJ
2011-06-08	619-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	SNDG SNDG	CA
2011-06-08	626-976	not yet reported which blocks →	NORTH COUNTY COMMUNICATION CORPORATION - CA	7894	ALHAMBRA	CA
2011-06-08	646-937	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2011-06-08	702-706	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	LAS VEGAS	NV
2011-06-08	702-724	0–9 XXXall 10 · 3 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	LAS VEGAS	NV
2011-06-08	705-821	not yet reported which blocks →	Fido Solutions Inc.	8820	Lindsay	—
2011-06-08	707-978	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	SANTA ROSA	CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.