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
2011-08-12	410-387	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2011-08-12	410-622	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	BALTIMORE	MD
2011-08-12	571-359	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	MANASSAS	VA
2011-08-12	608-765	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	RICHMOND	WI
2011-08-12	612-244	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TWINCITIES	MN
2011-08-12	706-460	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA	7435	LAVONIA	GA
2011-08-12	720-606	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FORTLUPTON	CO
2011-08-12	720-708	0–9 XXXall 10 · 3 holders which blocks →	TELIAX, INC. - CO	567G	DENVER	CO
2011-08-12	812-370	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	ST JOSEPH	IN
2011-08-12	971-273	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SALEM	OR
2011-08-11	224-246	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	NORTHBROOK	IL
2011-08-11	224-250	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	DESPLAINES	IL
2011-08-11	234-575	0–9 XXXall 10 · 9 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SALEM	OH
2011-08-11	267-454	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	DOYLESTOWN	PA
2011-08-11	267-908	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHLDLPHZN1	PA
2011-08-11	309-429	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	ROCKISLAND	IL
2011-08-11	334-350	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	DOTHAN	AL
2011-08-11	412-852	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PTTSBGZON1	PA
2011-08-11	443-892	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MD	071F	NEWWINDSOR	MD
2011-08-11	470-535	0–9 XXXwhole prefix which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	WINDER	GA
2011-08-11	513-415	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CINCINNATI	OH
2011-08-11	517-284	0–9 XXXwhole prefix which blocks →	MICHIGAN BELL TEL CO	9323	LANSING	MI
2011-08-11	570-209	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	SCRANTON	PA
2011-08-11	615-856	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	NASHVILLE	TN
2011-08-11	615-953	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	NASHVILLE	TN
2011-08-11	616-326	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLCV - MI	543C	ROCKFORD	MI
2011-08-11	708-295	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	SUMMIT	IL
2011-08-11	919-527	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	RALEIGH	NC
2011-08-11	919-985	0–9 XXXall 10 · 4 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	RALEIGH	NC
2011-08-11	931-257	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	CLARKSVL	TN
2011-08-11	980-318	0–9 XXXall 10 · 2 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	CHARLOTTE	NC
2011-08-11	980-829	0–9 XXXall 10 · 4 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	STATESVL	NC
2011-08-11	980-833	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	CHARLOTTE	NC
2011-08-10	347-908	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2011-08-10	347-930	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2011-08-10	347-940	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN06	NY
2011-08-10	347-975	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN08	NY
2011-08-10	404-782	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2011-08-10	404-834	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2011-08-10	404-937	0–9 XXXall 10 · 5 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2011-08-10	404-996	0–9 XXXall 10 · 6 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2011-08-10	407-450	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	ORLANDO	FL
2011-08-10	425-429	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	BELLEVUE	WA
2011-08-10	434-505	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DILLWYN	VA
2011-08-10	443-699	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2011-08-10	443-890	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2011-08-10	631-448	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	YAPHANK	NY
2011-08-10	647-360	not yet reported which blocks →	Iristel Inc.	154E	Toronto	—
2011-08-10	647-361	not yet reported which blocks →	Iristel Inc.	154E	Toronto	—
2011-08-10	706-584	0–9 XXXall 10 · 6 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ROME	GA

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.