Recent prefix assignments

349 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
2005-04-22	308-770	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	OSHKOSH	NE
2005-04-22	450-207	not yet reported which blocks →	Videotron Ltd.	8306	Lachute	—
2005-04-22	450-856	not yet reported which blocks →	Videotron Ltd.	8306	Brownsburg	—
2005-04-22	512-535	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AUSTIN	TX
2005-04-22	605-478	0XXX1XXX7XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HIGHMORE	SD
2005-04-22	708-969	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2005-04-22	773-567	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	CHICGOZN03	IL
2005-04-22	902-405	not yet reported which blocks →	Bragg Communications Inc.	4878	Halifax	—
2005-04-21	202-648	0–9 XXXwhole prefix which blocks →	VERIZON WASHINGTON DC, INC.	9211	WSHNGTNZN1	DC
2005-04-21	210-577	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2005-04-21	406-697	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	BILLINGS	MT
2005-04-21	512-668	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LOCKHART	TX
2005-04-21	512-905	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	AUSTIN	TX
2005-04-21	613-686	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Ottawa-Hull	—
2005-04-21	618-772	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLLINSVL	IL
2005-04-21	701-737	7XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WASHBURN	ND
2005-04-21	701-920	0XXX1XXX8XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CENTER	ND
2005-04-21	701-980	0XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND	6568	UNDERWOOD	ND
2005-04-21	702-575	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV	6458	LAS VEGAS	NV
2005-04-21	702-882	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAS VEGAS	NV
2005-04-21	787-909	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	FAJARDO	PR
2005-04-21	812-799	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	COLUMBUS	IN
2005-04-21	815-992	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	STREATOR	IL
2005-04-21	832-330	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2005-04-21	845-746	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	SPRING VLY	NY
2005-04-21	902-313	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Montague	—
2005-04-21	951-663	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HEMT HEMT	CA
2005-04-21	973-901	0–9 XXXall 10 · 2 holders which blocks →	CSC VOICE, LLC	612K	NEWARK	NJ
2005-04-20	270-702	2XXX3XXX4XXX5XXX7XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	OWENSBORO	KY
2005-04-20	573-915	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MO
2005-04-20	706-761	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	COLUMBUS	GA
2005-04-19	314-737	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LADUE	MO
2005-04-19	403-592	not yet reported which blocks →	Bell West Inc.	2933	Calgary	—
2005-04-19	417-955	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	STOCKTON	MO
2005-04-19	469-554	0–9 XXXall 10 · 4 holders which blocks →	FOREMOST TELECOMMUNICATIONS CORPORATION - TX	319D	DALLAS	TX
2005-04-19	516-665	0–9 XXXall 10 · 5 holders which blocks →	CSC VOICE, LLC	612K	NASSAUZN06	NY
2005-04-19	573-855	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAYNESVL	MO
2005-04-19	612-353	0–9 XXXall 10 · 5 holders which blocks →	XO MINNESOTA, LLC	2557	TWINCITIES	MN
2005-04-19	702-664	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	JEAN	NV
2005-04-19	702-677	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NV
2005-04-19	704-778	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	CHARLOTTE	NC
2005-04-19	718-879	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN05	NY
2005-04-19	773-699	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN03	IL
2005-04-19	787-702	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	NARANJITO	PR
2005-04-19	787-951	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	MAYAGUEZ	PR
2005-04-19	845-901	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	KINGSTON	NY
2005-04-18	217-552	0–9 XXXall 10 · 2 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CHAMPAURBN	IL
2005-04-18	217-572	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SPRINGFLD	IL
2005-04-18	321-558	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	ORLANDO	FL
2005-04-18	504-570	0–9 XXXall 10 · 4 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	NEWORLEANS	LA

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.