Recent prefix assignments

358 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
2022-04-08	945-252	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	PLANO	TX
2022-04-08	945-253	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	PLANO	TX
2022-04-07	236-612	not yet reported which blocks →	Iristel Inc.	154E	Prince George	—
2022-04-07	548-279	not yet reported which blocks →	Fibernetics Corporation	464D	Kitchener-Waterloo	—
2022-04-07	672-203	not yet reported which blocks →	Iristel Inc.	154E	Cache Creek	—
2022-04-07	769-285	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	NATCHEZ	MS
2022-04-06	234-642	6XXX which blocks →	TON80 COMMUNICATIONS, LLC	516J	PARIS	OH
2022-04-06	239-387	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	FORT MYERS	FL
2022-04-06	321-391	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	COCOA	FL
2022-04-06	321-393	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	COCOA	FL
2022-04-06	332-260	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
2022-04-06	680-243	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	ROME	NY
2022-04-05	249-562	not yet reported which blocks →	Fibernetics Corporation	464D	Barrie	—
2022-04-05	260-304	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	LIGONIER	IN
2022-04-05	346-553	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	HOUSTON	TX
2022-04-05	447-792	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DANVILLE	IL
2022-04-05	470-945	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - GA	6116	ATLANTA	GA
2022-04-05	507-861	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks →	AERIAL COMMUNICATIONS, INC.	6701	FARIBAULT	MN
2022-04-05	507-887	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	NEW ULM	MN
2022-04-05	564-516	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	SALISH NETWORKS, INC. - WA	152H	MARYSVILLE	WA
2022-04-05	579-825	not yet reported which blocks →	TELUS Quebec	2243	Contrecoeur	—
2022-04-05	672-702	not yet reported which blocks →	Iristel Inc.	154E	Burns Lake	—
2022-04-05	672-785	not yet reported which blocks →	Iristel Inc.	154E	Lillooet	—
2022-04-05	762-543	1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ELLIJAY	GA
2022-04-05	901-668	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL MEMPHIS LICENSES, INC.	7474	COLLIERVL	TN
2022-04-05	930-266	2XXX6XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DECKER	IN
2022-04-05	930-277	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NASHVILLE	IN
2022-04-05	930-422	2XXX4XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	STANFORD	IN
2022-04-05	930-466	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WASHINGTON	IN
2022-04-04	206-360	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - WA	483E	SEATTLE	WA
2022-04-04	269-265	5XXX6XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	MENDON	MI
2022-04-04	308-867	5XXX8XXX · 2 holders which blocks →	COMMIO, LLC	939H	GRAND IS	NE
2022-04-04	343-470	not yet reported which blocks →	ISP Telecom Inc.	4727	Hawkesbury	—
2022-04-04	385-462	0–9 XXXall 10 · 2 holders which blocks →	AT&T - LOCAL	7421	FARMINGTON	UT
2022-04-04	531-310	0–9 XXXall 10 · 5 holders which blocks →	COMMIO, LLC	939H	LINCOLN	NE
2022-04-04	873-470	not yet reported which blocks →	ISP Telecom Inc.	4727	Grenville	—
2022-04-04	956-737	0XXX1XXX2XXX7XXX8XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ZAPATA	TX
2022-04-04	956-779	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	SULLIVANCY	TX
2022-04-04	956-837	0–9 XXXall 10 · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PHARR	TX
2022-04-04	956-864	0XXX1XXX3XXX7XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	EDCOUCH	TX
2022-04-01	224-460	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ARLIGTNHTS	IL
2022-04-01	971-429	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PORTLAND	OR
2022-03-31	303-970	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CO	026D	DECKERS	CO
2022-03-31	307-895	8XXX which blocks →	TWILIO INTERNATIONAL, INC.	506J	CHEYENNE	WY
2022-03-31	539-270	0XXX7XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	ENTERPRISE	OK
2022-03-31	539-274	7XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	LONGTOWN	OK
2022-03-31	539-285	7XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	KEOTA	OK
2022-03-31	539-288	7XXX8XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	MCCURTAIN	OK
2022-03-31	539-339	7XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	KEEFETON	OK
2022-03-31	539-398	7XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	WARNER	OK

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.