Recent prefix assignments

349 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
2022-09-15	971-436	0–9 XXXall 10 · 5 holders which blocks →	COMMIO, LLC	939H	GRESHAM	OR
2022-09-15	986-233	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NUSO, LLC	732J	BLACKFOOT	ID
2022-09-14	220-237	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	WELLSTON	OH
2022-09-14	223-298	0XXX1XXX2XXX7XXX8XXX9XXX · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	HALIFAX	PA
2022-09-14	321-451	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	COCOA	FL
2022-09-14	424-478	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BEVERLYHLS	CA
2022-09-14	424-480	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	INGLEWOOD	CA
2022-09-14	437-450	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2022-09-14	437-460	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2022-09-14	437-473	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2022-09-14	437-673	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2022-09-14	438-574	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2022-09-14	448-209	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	TALLAHASSE	FL
2022-09-14	474-751	not yet reported which blocks →	Bell Mobility	6574	Regina	—
2022-09-14	506-289	not yet reported which blocks →	Bell Mobility Aliant	329A	Fredericton	—
2022-09-14	581-467	not yet reported which blocks →	Bell Mobility	6574	Quebec	—
2022-09-14	612-514	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN
2022-09-14	612-714	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN
2022-09-14	681-437	1XXX2XXX7XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	BEECHBTTOM	WV
2022-09-14	682-393	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	WEATHERFD	TX
2022-09-14	689-264	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	WOW! INTERNET, CABLE AND PHONE	961J	WINDERMERE	FL
2022-09-14	727-607	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	CLEARWATER	FL
2022-09-14	743-734	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NC	638E	LEXINGTON	NC
2022-09-14	835-201	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	BETHLEHEM	PA
2022-09-14	878-867	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	NEWKNSNGTN	PA
2022-09-14	904-689	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ST JOHNS	FL
2022-09-14	929-640	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2022-09-14	929-641	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN08	NY
2022-09-14	929-642	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN10	NY
2022-09-14	929-643	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN14	NY
2022-09-14	929-645	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2022-09-14	929-647	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN04	NY
2022-09-14	929-648	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN09	NY
2022-09-14	929-649	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN11	NY
2022-09-14	929-650	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN13	NY
2022-09-14	947-254	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MI
2022-09-14	980-392	0–9 XXXall 10 · 4 holders which blocks →	LEAP TELECOM, LLC	616J	CHARLOTTE	NC
2022-09-14	986-231	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID	6565	IDAHOFALLS	ID
2022-09-14	986-232	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID	6565	MT HOME	ID
2022-09-13	256-981	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	732J	CULLMAN	AL
2022-09-13	256-982	0–9 XXXall 10 · 2 holders which blocks →	NUSO, LLC	732J	ANNISTON	AL
2022-09-13	262-867	0–9 XXXall 10 · 6 holders which blocks →	COMMIO, LLC	939H	KENOSHA	WI
2022-09-13	321-448	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	COCOA	FL
2022-09-13	332-269	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
2022-09-13	367-701	not yet reported which blocks →	Bell Mobility	6574	Chicoutimi	—
2022-09-13	425-464	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - WA	483E	FALL CITY	WA
2022-09-13	437-435	not yet reported which blocks →	Videotron Ltd.	328F	Toronto	—
2022-09-13	475-321	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2022-09-13	475-867	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	DANBURY	CT
2022-09-13	506-482	not yet reported which blocks →	Bell Mobility Aliant	329A	Moncton	—

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.