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
—	970-542	5XXX7XXX which blocks →	QWEST CORPORATION	9636	FORTMORGAN	CO
—	970-544	not yet reported which blocks →	QWEST CORPORATION	9636	ASPEN	CO
—	970-547	6XXX which blocks →	QWEST CORPORATION	9636	BRECKENRDG	CO
—	970-554	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	AKRON	CO
—	970-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	CO
—	970-556	1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-560	7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	CORTEZ	CO
—	970-562	not yet reported which blocks →	FARMERS TEL. CO., INC.	2188	PLEASANTVW	CO
—	970-563	8XXX which blocks →	CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK	2185	IGNACIO	CO
—	970-564	3XXX7XXX · 2 holders which blocks →	QWEST CORPORATION	9636	CORTEZ	CO
—	970-565	not yet reported which blocks →	QWEST CORPORATION	9636	CORTEZ	CO
—	970-566	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-567	8XXX9XXX which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-568	2XXX5XXX6XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-569	not yet reported which blocks →	CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK	2185	EDWARDS	CO
—	970-570	1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	CORTEZ	CO
—	970-571	4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	STERLING	CO
—	970-574	not yet reported which blocks →	UNION TELEPHONE COMPANY	013B	DINOSAUR	CO
—	970-577	6XXX which blocks →	QWEST CORPORATION	9636	ESTES PARK	CO
—	970-580	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	STERLING	CO
—	970-581	not yet reported which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-583	not yet reported which blocks →	DUBOIS TEL. EXCH., INC.	2291	SOUTHBAGGS	CO
—	970-584	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
—	970-586	not yet reported which blocks →	QWEST CORPORATION	9636	ESTES PARK	CO
—	970-587	3XXX which blocks →	QWEST CORPORATION	9636	JOHNSTMLKN	CO
—	970-588	not yet reported which blocks →	CENTURYTEL OF COLORADO, INC. DBA CENTURYLINK	2208	MARVEL	CO
—	970-590	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
—	970-593	none assigned yet which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-595	1XXX2XXX5XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	ECKLEY	CO
—	970-596	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	MONTROSE	CO
—	970-597	7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	ECKLEY	CO
—	970-609	not yet reported which blocks →	ONVOY, LLC - CO	026D	GRAND JCT	CO
—	970-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CO
—	970-613	3XXX which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-614	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CO	026D	LA SALLE	CO
—	970-618	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GLENWD SPG	CO
—	970-619	0XXX1XXX8XXX9XXX · 3 holders which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-620	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	CRAIG	CO
—	970-621	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	BERTHOUD	CO
—	970-622	not yet reported which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-625	not yet reported which blocks →	QWEST CORPORATION	9636	RIFLE	CO
—	970-626	6XXX7XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9636	RIDGWAY	CO
—	970-627	4XXX6XXX7XXX · 2 holders which blocks →	QWEST CORPORATION	9636	GRAND LAKE	CO
—	970-629	4XXX6XXX7XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	CRAIG	CO
—	970-630	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	YUMA	CO
—	970-635	not yet reported which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-638	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	QWEST CORPORATION	9636	YAMPA	CO
—	970-640	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GRAND JCT	CO
—	970-641	not yet reported which blocks →	QWEST CORPORATION	9636	GUNNISON	CO
—	970-642	3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	QWEST CORPORATION	9636	GUNNISON	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.