Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
2016-01-27	438-922	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Montreal	—
2016-01-27	438-923	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Montreal	—
2016-01-27	438-925	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Montreal	—
2016-01-27	484-869	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	READING	PA
2016-01-27	580-954	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA OK - LLC	530C	ALTUS	OK
2016-01-27	587-386	not yet reported which blocks →	Bragg Communications Inc.	4878	Camrose	—
2016-01-27	587-451	not yet reported which blocks →	TELUS	8084	Barrhead	—
2016-01-27	587-491	not yet reported which blocks →	TELUS	8084	Cold Lake	—
2016-01-27	587-492	not yet reported which blocks →	TELUS	8084	Lloydminster	—
2016-01-27	602-668	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2016-01-27	602-737	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2016-01-27	646-603	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN01	NY
2016-01-27	858-203	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	LA JOLLA	CA
2016-01-26	365-401	not yet reported which blocks →	Distributel	082E	Bowmanville	—
2016-01-26	365-402	not yet reported which blocks →	Distributel	082E	Brooklin	—
2016-01-26	365-403	not yet reported which blocks →	Distributel	082E	Hampton	—
2016-01-26	626-314	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	PSDN PSDN	CA
2016-01-26	909-365	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FONTANA	CA
2016-01-26	949-520	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	NEWPORTBCH	CA
2016-01-25	306-807	not yet reported which blocks →	Bell Mobility	6574	Regina	—
2016-01-25	320-261	2XXX5XXX · 2 holders which blocks →	MIDCONTINENT COMMUNICATIONS - MN	429A	ANNANDALE	MN
2016-01-25	365-888	not yet reported which blocks →	Fido Solutions Inc.	5643	Hamilton	—
2016-01-25	567-789	not yet reported which blocks →	WABASH MUTUAL TELEPHONE COMPANY - OH	669D	ROCKFORD	OH
2016-01-25	608-591	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	LODI	WI
2016-01-25	657-290	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ANA	CA
2016-01-25	657-322	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ANA	CA
2016-01-25	867-991	not yet reported which blocks →	Iristel Inc.	154E	Dawson City	—
2016-01-25	904-293	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ST JOHNS	FL
2016-01-25	907-290	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AK	9413	ANCHORAGE	AK
2016-01-25	949-575	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SADLBK VLY	CA
2016-01-25	956-403	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PHARR	TX
2016-01-22	336-690	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NC	8389	GREENSBORO	NC
2016-01-22	360-763	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	OLYMPIA	WA
2016-01-22	470-548	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA	GA
2016-01-22	608-975	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	BELLEVILLE	WI
2016-01-22	646-954	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	NWYRCYZN01	NY
2016-01-22	774-707	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	FRAMINGHAM	MA
2016-01-22	873-770	not yet reported which blocks →	Iristel Inc.	154E	Val-D'Or	—
2016-01-22	954-350	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - FL	937C	HOLLYWOOD	FL
2016-01-21	206-482	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SEATTLE	WA
2016-01-21	253-433	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TACOMA	WA
2016-01-21	336-930	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - NC	638E	WINSTN SAL	NC
2016-01-21	581-205	not yet reported which blocks →	Iristel Inc.	154E	Alma	—
2016-01-21	581-801	not yet reported which blocks →	Iristel Inc.	154E	Riviere-du-Loup	—
2016-01-21	586-842	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MT CLEMENS	MI
2016-01-21	629-702	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	NASHVILLE	TN
2016-01-21	647-570	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2016-01-21	901-930	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	MEMPHIS	TN
2016-01-21	939-383	0–9 XXXall 10 · 2 holders which blocks →	LIBERTY MOBILE PUERTO RICO INC.	639J	BAYAMONNOR	PR
2016-01-20	314-376	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	ST LOUIS	MO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.