Recent prefix assignments

3 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 970

UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 2

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 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
2015-12-16	970-451	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CO	026D	GREELEY	CO
2015-12-11	970-271	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9636	GRAND JCT	CO
2015-12-08	970-852	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	GRAND JCT	CO
2015-07-09	970-787	0–9 XXXall 10 · 8 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	MONTROSE	CO
2015-01-29	970-400	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CO	026D	GREELEY	CO
2015-01-29	970-900	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CO	026D	FT COLLINS	CO
2015-01-15	970-789	0XXX7XXX9XXX · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SO SIDNEY	CO
2015-01-14	970-821	0–9 XXXall 10 · 4 holders which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
2015-01-13	970-866	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LA SALLE	CO
2015-01-09	970-810	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9636	GREELEY	CO
2015-01-09	970-820	0–9 XXXall 10 · 4 holders which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
2014-11-25	970-822	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	GRAND JCT	CO
2014-11-18	970-598	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	PLATTEVL	CO
2014-11-18	970-919	0–9 XXXall 10 · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SILVERTON	CO
2014-11-06	970-517	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - CO	026D	HTSLPHRSPG	CO
2014-10-17	970-829	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
2014-10-13	970-825	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
2014-09-25	970-287	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	SILT	CO
2014-09-25	970-410	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	KREMMLING	CO
2014-09-25	970-693	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 9 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	MEEKER	CO
2014-09-25	970-715	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	MANCOS	CO
2014-09-01	970-413	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
2014-09-01	970-714	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GREELEY	CO
2014-08-25	970-702	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	GREELEY	CO
2014-07-24	970-500	0–9 XXXall 10 · 4 holders which blocks →	NORTHERN COLORADO COMMUNICATIONS, LLC. - CO	312G	WELDONA	CO
2014-07-15	970-408	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CO	7378	JOHNSTMLKN	CO
2014-07-10	970-699	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LOVELAND	CO
2014-05-19	970-536	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	NEW CASTLE	CO
2014-05-12	970-771	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	BRECKENRDG	CO
2014-04-01	970-697	0–9 XXXall 10 · 5 holders which blocks →	INTERLINK ADV SVC DBA FORETHOUGHT.NET - CO	5972	GRAND JCT	CO
2014-03-20	970-294	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
2014-03-05	970-815	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
2013-12-26	970-341	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FASTTRACK COMMUNICATIONS, INC. - CO	330B	OLATHE	CO
2013-12-03	970-296	0–9 XXXall 10 · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	FRUITA	CO
2013-12-03	970-833	0–9 XXXall 10 · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WINDSOR	CO
2013-10-18	970-889	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
2013-09-17	970-636	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	YAMPA	CO
2013-05-22	970-342	0–9 XXXall 10 · 4 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	3467	LOVELAND	CO
2013-04-10	970-289	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	BRUSH	CO
2013-04-10	970-528	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	BERTHOUD	CO
2013-04-10	970-591	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	ESTES PARK	CO
2013-04-10	970-661	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	BAYFIELD	CO
2013-04-10	970-713	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	CRESTEDBTE	CO
2013-04-10	970-718	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	BASALT	CO
2013-03-13	970-415	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
2012-11-23	970-340	0–9 XXXall 10 · 8 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CO	7378	CARBONDALE	CO
2012-11-20	970-644	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	GRAND JCT	CO
2012-11-08	970-601	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CO	026D	MEAD	CO
2012-11-08	970-800	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CO	026D	LOVELAND	CO
2012-11-08	970-888	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CO	026D	GREELEY	CO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.