Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21

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
2014-09-16	224-470	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	SKOKIE	IL
2014-09-16	262-599	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	MILWAUKZN2	WI
2014-09-16	318-610	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA LA - LLC	653C	KEITHVILLE	LA
2014-09-16	385-350	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - UT	117F	MORGAN	UT
2014-09-16	434-208	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	UNITED STATES CELLULAR - VA	6283	KEYSVILLE	VA
2014-09-16	608-881	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LA CROSSE	WI
2014-09-16	715-380	0XXX6XXX7XXX · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CRIVITZ	WI
2014-09-16	715-600	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WI	007F	STEVENS PT	WI
2014-09-16	717-601	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	CARLISLE	PA
2014-09-16	763-318	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2014-09-16	763-321	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2014-09-16	805-775	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	OXNARD	CA
2014-09-16	857-308	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	ROXBURY	MA
2014-09-16	864-651	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	PENDLETON	SC
2014-09-16	939-319	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	AGUADILLA	PR
2014-09-15	262-219	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	WAUKESHA	WI
2014-09-15	312-975	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2014-09-15	424-364	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SAN PEDRO	CA
2014-09-15	434-694	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	FARMVILLE	VA
2014-09-15	505-738	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF NEW MEXICO, LLC - NM	377H	ALBUQURQUE	NM
2014-09-15	505-985	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	ALBUQURQUE	NM
2014-09-15	512-790	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	BURNET	TX
2014-09-15	513-904	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CINCINNATI	OH
2014-09-15	575-288	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	LAS CRUCES	NM
2014-09-15	614-705	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	COLUMBUS	OH
2014-09-15	615-981	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	NASHVILLE	TN
2014-09-15	619-576	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CHULAVISTA	CA
2014-09-15	804-352	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - VA	138E	HOPEWELL	VA
2014-09-15	805-536	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	PASOROBLES	CA
2014-09-15	865-361	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	KNOXVILLE	TN
2014-09-15	909-637	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FONTANA	CA
2014-09-15	913-267	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	KANSASCITY	KS
2014-09-15	929-294	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN07	NY
2014-09-15	954-951	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	POMPANOBCH	FL
2014-09-12	204-200	not yet reported which blocks →	ISP Telecom Inc.	4727	Winnipeg	—
2014-09-12	204-693	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Treherne	—
2014-09-12	205-832	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	PARRISH	AL
2014-09-12	317-316	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	NOBLESVL	IN
2014-09-12	317-793	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	INDIANAPLS	IN
2014-09-12	317-967	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	GREENFIELD	IN
2014-09-12	336-439	0–9 XXXall 10 · 5 holders which blocks →	FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC	440G	ROXBORO	NC
2014-09-12	440-657	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	ELYRIA	OH
2014-09-12	516-853	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN05	NY
2014-09-12	518-749	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	AVERILL PK	NY
2014-09-12	567-707	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	JENERA	OH
2014-09-12	571-598	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	MANASSAS	VA
2014-09-12	571-719	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	MANASSAS	VA
2014-09-12	579-934	not yet reported which blocks →	Videotron Ltd.	8306	Chomedey	—
2014-09-12	609-491	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	MOUNTHOLLY	NJ
2014-09-12	647-601	not yet reported which blocks →	ISP Telecom Inc.	4727	Toronto	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.