Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
2015-05-21	878-203	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CHARLEROI	PA
2015-05-21	956-614	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	ZAPATA	TX
2015-05-21	971-334	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PORTLAND	OR
2015-05-20	201-542	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NJ	7142	UNION CITY	NJ
2015-05-20	218-503	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	BARNUM	MN
2015-05-20	262-233	0–9 XXXall 10 · 5 holders which blocks →	UNITED STATES CELLULAR - WI	6274	DELAVAN	WI
2015-05-20	423-720	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TN	124F	NEWPORT	TN
2015-05-20	423-806	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TN	124F	MIDWAY	TN
2015-05-20	559-712	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CLOVIS	CA
2015-05-20	587-541	not yet reported which blocks →	Bell West Inc.	2933	Nisku	—
2015-05-20	646-947	0–9 XXXwhole prefix which blocks →	VERIZON NEW YORK, INC.	9104	NWYRCYZN01	NY
2015-05-20	657-272	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ANAHEIM	CA
2015-05-20	669-264	0–9 XXXall 10 · 3 holders which blocks →	COMCAST PHONE OF CALIFORNIA, LLC	394L	SUNNYVALE	CA
2015-05-20	716-350	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ELLICOTTVL	NY
2015-05-20	716-351	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BOSTON	NY
2015-05-20	716-454	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	NEWFANE	NY
2015-05-20	813-533	0–9 XXXall 10 · 4 holders which blocks →	BHN IP ENABLED SERVICES, LLC	045L	TAMPACEN	FL
2015-05-20	873-651	not yet reported which blocks →	Videotron Ltd.	328F	St-Andre-Avellin	—
2015-05-20	873-652	not yet reported which blocks →	Videotron Ltd.	328F	Lac-Megantic	—
2015-05-19	308-260	0XXX1XXX2XXX9XXX · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	MINDEN	NE
2015-05-19	513-997	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MIDDLETOWN	OH
2015-05-19	585-684	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	HOLLEY	NY
2015-05-19	716-453	0–9 XXXall 10 · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	GRAND IS	NY
2015-05-18	209-455	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	MERCED	CA
2015-05-18	253-844	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	TACOMA	WA
2015-05-18	254-330	0–9 XXXall 10 · 4 holders which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	HUBBARD	TX
2015-05-18	470-466	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	CEDARTOWN	GA
2015-05-18	562-350	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LONG BEACH	CA
2015-05-18	567-907	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	CURTICORGN	OH
2015-05-18	567-908	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	CHESTERVL	OH
2015-05-18	682-907	0–9 XXXall 10 · 4 holders which blocks →	TEXAS WINDSTREAM, LLC	2153	GRANDVIEW	TX
2015-05-18	747-237	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	NORTHRIDGE	CA
2015-05-18	805-759	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	OXNARD	CA
2015-05-18	909-696	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	CHINO	CA
2015-05-18	936-276	0–9 XXXall 10 · 3 holders which blocks →	CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY	2109	MONTGOMERY	TX
2015-05-15	256-407	0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks →	FARMERS TELECOMMUNICATIONS CORPORATION - AL	947D	CENTRE	AL
2015-05-15	337-520	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	CARENCRO	LA
2015-05-15	430-276	0–9 XXXall 10 · 5 holders which blocks →	PEOPLES COMMUNICATION, INC. -TX	135H	HAWKINS	TX
2015-05-15	513-906	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	CINCINNATI	OH
2015-05-15	575-385	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW	1193	CUBA	NM
2015-05-15	587-535	not yet reported which blocks →	TELUS	8084	Calgary	—
2015-05-15	709-218	not yet reported which blocks →	TELUS Mobility	8303	Bonavista	—
2015-05-15	807-943	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Wabigoon	—
2015-05-15	807-985	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Upsala	—
2015-05-14	209-497	0–9 XXXall 10 · 6 holders which blocks →	UTILITY TELECOM GROUP, LLC - CA	9262	MODESTO	CA
2015-05-14	234-410	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CANTON	OH
2015-05-14	248-847	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	W BLOOMFLD	MI
2015-05-14	319-589	none assigned yet which blocks →	INTEGRATED PATH COMMUNCATIONS, LLC - IA	544H	ALBURNETT	IA
2015-05-14	319-609	none assigned yet which blocks →	INTEGRATED PATH COMMUNCATIONS, LLC - IA	544H	AURORA	IA
2015-05-14	319-699	6XXX7XXX8XXX9XXX · 4 holders which blocks →	INTEGRATED PATH COMMUNCATIONS, LLC - IA	544H	ALLISON	IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.