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 989

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 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
2015-08-19	989-999	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLCV - MI	543C	BIRCH RUN	MI
2015-04-23	989-409	4XXX9XXX · 2 holders which blocks →	FRONTIER NORTH, INC. - MI	0695	ALMA	MI
2015-04-08	989-789	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MARLETTE	MI
2015-03-09	989-844	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SAGINAW	MI
2014-10-06	989-250	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	ATLANTA	MI
2014-10-06	989-299	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	FOWLERPWMO	MI
2014-10-06	989-487	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	FARWELL	MI
2014-10-06	989-559	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	CASS CITY	MI
2014-10-02	989-259	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MIDLAND	MI
2014-09-18	989-441	0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	WEIDMAN	MI
2014-07-25	989-930	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	SAGINAW	MI
2014-04-14	989-499	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF MICHIGAN, LLC - MI	933G	COLEMAN	MI
2014-03-17	989-459	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF MICHIGAN, LLC - MI	933G	BAY CITY	MI
2013-11-08	989-778	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	BAY CITY	MI
2013-06-25	989-251	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	OWOSSO	MI
2012-10-22	989-355	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	SAGINAW	MI
2012-06-26	989-423	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MIDLAND	MI
2012-05-10	989-394	0–9 XXXall 10 · 6 holders which blocks →	123.NET, LLC	2550	BEAVERTON	MI
2012-05-02	989-439	0–9 XXXall 10 · 5 holders which blocks →	CLEAR RATE COMMUNICATIONS, LLC	046L	BAY CITY	MI
2012-04-03	989-887	0–9 XXXall 10 · 2 holders which blocks →	WOW! INTERNET, CABLE AND PHONE	961J	FOWLERPWMO	MI
2012-03-22	989-368	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	HARRISON	MI
2010-12-23	989-502	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	FRANKENMTH	MI
2010-12-07	989-564	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	LINWOOD	MI
2010-09-29	989-623	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	BAD AXE	MI
2010-07-07	989-359	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	GLADWIN	MI
2010-07-06	989-522	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	SAGINAW	MI
2010-04-02	989-702	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	SAGINAW	MI
2010-03-23	989-308	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	LINWOOD	MI
2010-02-19	989-455	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLCV - MI	543C	VASSAR	MI
2010-02-03	989-418	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	CLARE	MI
2009-12-22	989-575	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	AKRON	MI
2009-08-31	989-273	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HIGGINS LK	MI
2009-08-31	989-296	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PRESCOTT	MI
2009-02-17	989-334	0–9 XXXall 10 · 5 holders which blocks →	DAYSTARR LLC DBA DAYSTARR COMMUNICATIONS	993L	ROSEBUSH	MI
2009-02-06	989-402	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLCV - MI	543C	BAY CITY	MI
2008-12-10	989-403	0–9 XXXall 10 · 7 holders which blocks →	ACD TELECOM, INC. - MI	3535	ST JOHNS	MI
2008-10-28	989-447	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLCV - MI	543C	ST CHARLES	MI
2008-10-17	989-436	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ITHACA	MI
2008-10-07	989-372	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	SAGINAW	MI
2008-09-09	989-392	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SAGINAW	MI
2008-08-21	989-545	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	BAY CITY	MI
2008-03-03	989-332	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	SAGINAW	MI
2008-03-03	989-480	0–9 XXXall 10 · 9 holders which blocks →	PAETEC ITEL, LLC	829J	FRANKENMTH	MI
2007-10-08	989-475	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	SAGINAW	MI
2007-09-18	989-272	0–9 XXXall 10 · 4 holders which blocks →	CLEAR RATE COMMUNICATIONS, LLC	046L	SAGINAW	MI
2007-08-07	989-341	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	SAGINAW	MI
2007-08-06	989-316	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	MICHIGAN BELL TEL CO	9323	BAY CITY	MI
2007-03-15	989-342	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	LEWISTON	MI
2007-01-22	989-340	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	ALPENA	MI
2007-01-04	989-401	0–9 XXXwhole prefix which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SAGINAW	MI

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.