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
2022-07-06	970-836	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
2022-06-24	970-807	0–9 XXXall 10 · 7 holders which blocks →	VONAGE AMERICA LLC	197D	ASPEN	CO
2022-06-10	970-504	0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	CARBONDALE	CO
2022-03-24	970-809	0XXX1XXX7XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	RDFTHERLKS	CO
2022-03-16	970-525	0XXX2XXX3XXX4XXX5XXX7XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PAONIA	CO
2022-03-10	970-979	0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	EDWARDS	CO
2022-03-10	970-994	0XXX1XXX4XXX5XXX8XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	OLATHE	CO
2022-03-04	970-738	0XXX1XXX2XXX4XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NORWOOD	CO
2022-03-04	970-969	6XXX9XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PAGOSA SPG	CO
2022-03-03	970-543	0XXX3XXX7XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MESA	CO
2022-03-03	970-995	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NEW CASTLE	CO
2022-03-02	970-998	0XXX2XXX5XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MCCOY	CO
2022-02-25	970-877	0XXX2XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	LAKE CITY	CO
2022-02-25	970-955	0XXX1XXX5XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MANCOS	CO
2022-02-25	970-993	0XXX1XXX2XXX3XXX9XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MARVEL	CO
2022-02-24	970-868	0XXX1XXX5XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	HTSLPHRSPG	CO
2022-02-24	970-997	0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 7 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	KREMMLING	CO
2022-02-18	970-932	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ESTES PARK	CO
2022-02-18	970-996	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	HAYDEN	CO
2022-02-17	970-733	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DOLORES	CO
2022-02-17	970-992	0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DOVE CREEK	CO
2022-02-09	970-899	8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LODORE	CO
2022-02-04	970-814	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	DURANGO	CO
2022-01-13	970-937	0XXX1XXX2XXX3XXX4XXX6XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DE BEQUE	CO
2022-01-11	970-727	0XXX2XXX5XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	CRESTEDBTE	CO
2022-01-11	970-935	0XXX1XXX2XXX3XXX6XXX8XXX · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BRECKENRDG	CO
2021-12-30	970-902	0–9 XXXall 10 · 7 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	GRAND JCT	CO
2021-11-09	970-896	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	STEAMBOSPG	CO
2021-11-03	970-843	0XXX1XXX2XXX5XXX8XXX9XXX · 3 holders which blocks →	COMMIO, LLC	939H	ALLISON	CO
2021-10-26	970-804	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
2021-10-01	970-990	0XXX which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	SO BIG SPG	CO
2021-09-29	970-806	0–9 XXXall 10 · 5 holders which blocks →	COMMIO, LLC	939H	JOHNSTMLKN	CO
2021-09-28	970-813	0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	BAYFIELD	CO
2021-08-26	970-841	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	CRAIG	CO
2021-08-13	970-933	0XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DINOSAUR	CO
2021-06-23	970-780	0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SO LARAMIE	CO
2021-06-23	970-802	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SOCHEYENNE	CO
2021-06-02	970-839	0XXX1XXX6XXX7XXX8XXX · 5 holders which blocks →	TELNYX LLC	073H	SILT	CO
2021-03-05	970-503	0–9 XXXall 10 · 3 holders which blocks →	ALLO COMMUNICATIONS LLC	907K	GREELEY	CO
2021-02-16	970-501	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	DURANGO	CO
2021-02-05	970-831	0XXX1XXX2XXX4XXX6XXX8XXX9XXX · 5 holders which blocks →	TELNYX LLC	073H	BRUSH	CO
2021-02-01	970-803	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LOVELAND	CO
2020-12-30	970-796	0XXX3XXX6XXX7XXX · 3 holders which blocks →	ONVOY, LLC - CO	026D	OTIS	CO
2020-11-23	970-794	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	ONVOY, LLC - CO	026D	GRANBY	CO
2020-10-29	970-792	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
2020-10-23	970-502	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
2020-09-24	970-837	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	FT COLLINS	CO
2020-09-15	970-746	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	BERTHOUD	CO
2020-08-26	970-793	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
2020-07-29	970-694	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	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.