Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 567

8X8, INC. 1

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
2010-08-05	567-938	0–9 XXXall 10 · 9 holders which blocks →	BASCOM MUTUAL TELEPHONE COMPANY - OH	849E	TIFFIN	OH
2010-03-25	567-288	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	TOLEDO	OH
2010-03-09	567-376	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	OTTAWA	OH
2010-03-05	567-297	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	HOLLAND	OH
2010-01-25	567-331	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	PERRYSBURG	OH
2009-12-07	567-325	0–9 XXXall 10 · 7 holders which blocks →	AT&T ENTERPRISES, LLC	516C	BLOOMINGVL	OH
2009-11-12	567-225	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	TOLEDO	OH
2009-11-06	567-298	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	TOLEDO	OH
2009-10-14	567-377	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TOLEDO	OH
2009-10-13	567-322	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	TOLEDO	OH
2009-09-15	567-698	0–9 XXXall 10 · 3 holders which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
2009-06-03	567-654	1XXX3XXX6XXX8XXX · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	OHIO CITY	OH
2009-03-02	567-743	1XXX6XXX7XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	NORWALK	OH
2008-09-15	567-395	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	TOLEDO	OH
2008-08-21	567-694	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	TOLEDO	OH
2008-08-04	567-344	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	PAULDING	OH
2008-07-21	567-742	0–9 XXXall 10 · 8 holders which blocks →	AT&T ENTERPRISES, LLC	516C	HOLLAND	OH
2008-06-27	567-825	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	LIMA	OH
2008-05-13	567-343	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	TOLEDO	OH
2008-05-05	567-384	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	MCCOMB	OH
2008-04-04	567-364	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	WESTMINSTR	OH
2008-04-04	567-749	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BEAVERDAM	OH
2008-03-21	567-485	1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CHATFIELD	OH
2007-08-30	567-843	0XXX2XXX4XXX6XXX7XXX9XXX · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	STRYKER	OH
2007-07-18	567-483	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LUCAS	OH
2007-07-18	567-763	1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SHILOH	OH
2007-07-05	567-293	1XXX2XXX4XXX · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	ARCADIA	OH
2007-07-03	567-459	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	GREENWICH	OH
2007-04-19	567-292	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	SHELBY	OH
2007-04-13	567-342	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	FREMONT	OH
2007-03-14	567-482	0–9 XXXall 10 · 9 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	WOODVILLE	OH
2007-02-13	567-772	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BELLVILLE	OH
2007-02-13	567-844	1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SHELBY	OH
2006-04-18	567-454	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	DELTA	OH
2006-04-05	567-868	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	TOLEDO	OH
2006-03-23	567-765	not yet reported which blocks →	FORT JENNINGS TELEPHONE COMPANY - OH	816D	DELPHOS	OH
2006-01-09	567-444	0XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	RIDGEVILLE TELEPHONE COMPANY - OH	818E	ARCHBOLD	OH
2005-12-23	567-295	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	KENTON	OH
2005-12-22	567-876	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	MT GILEAD	OH
2005-12-15	567-890	not yet reported which blocks →	WABASH MUTUAL TELEPHONE COMPANY - OH	669D	CELINA	OH
2005-12-08	567-455	0–9 XXXall 10 · 5 holders which blocks →	AMERICAN BROADBAND AND TELECOMMS COMPANY - OH	509B	SYLVANIA	OH
2005-10-18	567-356	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	WAPAKONETA	OH
2005-09-22	567-336	0–9 XXXall 10 · 4 holders which blocks →	OHIO BELL TEL CO	9321	PERRYSBURG	OH
2005-08-31	567-712	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	LIMA	OH
2005-08-09	567-703	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	HOLLAND	OH
2005-08-01	567-644	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	CELINA	OH
2005-07-01	567-303	0–9 XXXall 10 · 5 holders which blocks →	TIER 2 COMMUNICATIONS, LLC	8168	MANSFIELD	OH
2005-02-18	567-216	0XXX1XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7836	SHELBY	OH
2005-01-12	567-286	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ST MARYS	OH
2004-11-30	567-250	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FINDLAY	OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.