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
2020-04-15	970-740	0–9 XXXall 10 · 6 holders which blocks →	QWEST CORPORATION	9636	STERLING	CO
2020-01-10	970-730	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	GRAND JCT	CO
2019-12-18	970-742	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ASPEN	CO
2019-12-02	970-782	1XXX2XXX7XXX · 2 holders which blocks →	ONVOY, LLC - CO	026D	SO BIG SPG	CO
2019-10-03	970-671	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - CO	026D	COLLBRAN	CO
2019-08-16	970-647	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	JULESBURG	CO
2019-08-16	970-651	2XXX6XXX7XXX · 2 holders which blocks →	ONVOY, LLC - CO	026D	MAYBELL	CO
2019-08-16	970-696	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - CO	026D	RIDGWAY	CO
2019-08-16	970-709	0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	ONVOY, LLC - CO	026D	GRAND LAKE	CO
2019-08-16	970-741	0XXX4XXX5XXX7XXX · 3 holders which blocks →	ONVOY, LLC - CO	026D	MEEKER	CO
2019-08-16	970-849	1XXX2XXX4XXX5XXX7XXX9XXX · 3 holders which blocks →	ONVOY, LLC - CO	026D	OURAY	CO
2019-07-09	970-561	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	WINDSOR	CO
2019-07-02	970-753	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FRUITA	CO
2019-06-11	970-634	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	JOHNSTMLKN	CO
2019-05-08	970-909	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	GREELEY	CO
2019-02-19	970-552	0–9 XXXall 10 · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	AKRON	CO
2019-02-19	970-687	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	GYPSUM	CO
2019-02-19	970-838	0XXX1XXX3XXX7XXX8XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WALDEN	CO
2019-02-15	970-705	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	EAGLE	CO
2019-02-15	970-706	3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	RANGELY	CO
2019-01-25	970-732	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	FT COLLINS	CO
2018-12-12	970-781	2XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	RIFLE	CO
2018-10-11	970-973	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	GLENWD SPG	CO
2018-08-27	970-473	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
2018-08-15	970-743	0–9 XXXall 10 · 5 holders which blocks →	ALLO COMMUNICATIONS LLC	907K	FORTMORGAN	CO
2018-05-03	970-966	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LOVELAND	CO
2018-04-23	970-939	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
2017-10-05	970-666	0–9 XXXall 10 · 8 holders which blocks →	ONVOY, LLC - CO	026D	FT COLLINS	CO
2017-10-03	970-783	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GRAND JCT	CO
2017-08-22	970-657	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	FT COLLINS	CO
2017-06-15	970-975	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	MONTROSE	CO
2017-06-15	970-981	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 6 holders which blocks →	ZIPPYTECH INC. - CO	022J	PARACHUTE	CO
2017-03-17	970-678	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	INTERLINK ADV SVC DBA FORETHOUGHT.NET - CO	5972	BASALT	CO
2017-03-14	970-698	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FT COLLINS	CO
2016-12-08	970-617	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LOVELAND	CO
2016-12-07	970-816	0–9 XXXall 10 · 8 holders which blocks →	T-MOBILE USA, INC.	6529	CORTEZ	CO
2016-11-23	970-844	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DURANGO	CO
2016-09-15	970-452	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ASPEN	CO
2016-09-02	970-652	0–9 XXXall 10 · 3 holders which blocks →	QWEST CORPORATION	9636	GREELEY	CO
2016-07-18	970-893	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CO	026D	FT COLLINS	CO
2016-06-23	970-546	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	DELTA	CO
2016-06-23	970-832	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	CARBONDALE	CO
2016-05-09	970-632	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	FT COLLINS	CO
2016-05-04	970-786	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LOVELAND	CO
2016-03-16	970-972	0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - CO	026D	EATON	CO
2016-03-09	970-659	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	HILLROSE	CO
2016-03-02	970-721	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 8 holders which blocks →	ONVOY, LLC - CO	026D	MEAD	CO
2016-03-01	970-772	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - CO	026D	GILCREST	CO
2016-03-01	970-890	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	OAK CREEK	CO
2016-01-05	970-747	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - CO	026D	FORTMORGAN	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.