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
2016-05-02	626-360	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PSDN PSDN	CA
2016-05-02	682-256	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ARLINGTON	TX
2016-05-02	716-272	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC- NY	384C	ANGOLA	NY
2016-05-02	778-940	not yet reported which blocks →	TELUS	8086	Kelowna	—
2016-05-02	806-510	not yet reported which blocks →	PATHWAYZ COMMUNICATIONS, INC. - TX	5556	CANYON	TX
2016-05-02	913-373	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	KANSASCITY	KS
2016-05-02	925-266	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WALNUT CRK	CA
2016-05-02	939-945	5XXX8XXX which blocks →	LIBERTY COMMUNICATIONS OF PUERTO RICO LLC	955G	SANTURCEES	PR
2016-04-29	249-299	not yet reported which blocks →	Comwave Networks	160G	Bracebridge	—
2016-04-29	249-300	not yet reported which blocks →	Comwave Networks	160G	Gravenhurst	—
2016-04-29	315-898	0–9 XXXall 10 · 6 holders which blocks →	TELENGY L.L.C. - NY	473G	SYRACUSE	NY
2016-04-29	424-308	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	SAN PEDRO	CA
2016-04-29	469-745	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	ROCKWALL	TX
2016-04-29	470-629	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA SO	GA
2016-04-29	509-608	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SPOKANE	WA
2016-04-29	562-302	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	DOWNEY	CA
2016-04-29	614-869	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	COLUMBUS	OH
2016-04-29	628-229	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	POINTREYES	CA
2016-04-29	639-330	not yet reported which blocks →	Bell Mobility	6574	Hanley	—
2016-04-29	639-331	not yet reported which blocks →	Bell Mobility	6574	Lucky Lake	—
2016-04-29	639-332	not yet reported which blocks →	Bell Mobility	6574	Radisson	—
2016-04-29	639-333	not yet reported which blocks →	Bell Mobility	6574	Beechy	—
2016-04-29	639-334	not yet reported which blocks →	Bell Mobility	6574	Blaine Lake	—
2016-04-29	639-335	not yet reported which blocks →	Bell Mobility	6574	Dundurn	—
2016-04-29	639-336	not yet reported which blocks →	Bell Mobility	6574	Perdue	—
2016-04-29	639-337	not yet reported which blocks →	Bell Mobility	6574	Prudhomme	—
2016-04-29	639-338	not yet reported which blocks →	Bell Mobility	6574	Bruno	—
2016-04-29	639-339	not yet reported which blocks →	Bell Mobility	6574	Colonsay	—
2016-04-29	639-340	not yet reported which blocks →	Bell Mobility	6574	Delisle	—
2016-04-29	650-250	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	PALO ALTO	CA
2016-04-29	716-330	0–9 XXXall 10 · 4 holders which blocks →	TELENGY L.L.C. - NY	473G	BUFFALO	NY
2016-04-29	845-396	0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	TELENGY L.L.C. - NY	473G	POUGHKEPSI	NY
2016-04-29	914-809	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	TELENGY L.L.C. - NY	473G	POUNDRIDGE	NY
2016-04-29	915-259	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2016-04-29	937-975	0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF OHIO, LLC - OH	284F	WINCHESTER	OH
2016-04-28	435-205	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MNZMCRANTH	UT
2016-04-28	778-364	not yet reported which blocks →	TELUS	8086	Castlegar	—
2016-04-28	778-942	not yet reported which blocks →	TELUS	8086	Ucluelet	—
2016-04-28	786-557	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2016-04-28	786-569	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2016-04-28	813-278	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPAEST	FL
2016-04-28	814-377	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	BEAVERDALE	PA
2016-04-28	814-831	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	ELDRED	PA
2016-04-27	272-203	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	BLOOMSBURG	PA
2016-04-27	708-835	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FOREST	IL
2016-04-27	920-301	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WI	225C	GREEN BAY	WI
2016-04-26	225-831	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - LA	749E	BATONROUGE	LA
2016-04-26	240-831	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MD	876D	FREDERICK	MD
2016-04-26	306-808	not yet reported which blocks →	Distributel	081E	Saskatoon	—
2016-04-26	321-361	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	MELBOURNE	FL

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.