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
—	970-453	not yet reported which blocks →	QWEST CORPORATION	9636	BRECKENRDG	CO
—	970-454	6XXX7XXX which blocks →	QWEST CORPORATION	9636	EATON	CO
—	970-461	not yet reported which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-463	2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	QWEST CORPORATION	9636	JULESBURG	CO
—	970-464	2XXX3XXX8XXX · 2 holders which blocks →	QWEST CORPORATION	9636	PALISADE	CO
—	970-468	not yet reported which blocks →	QWEST CORPORATION	9636	DILLON	CO
—	970-470	4XXX6XXX7XXX8XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	VAIL	CO
—	970-471	7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	VAIL	CO
—	970-472	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-474	5XXX6XXX7XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9636	JULESBURG	CO
—	970-476	not yet reported which blocks →	QWEST CORPORATION	9636	VAIL	CO
—	970-477	none assigned yet which blocks →	QWEST CORPORATION	9636	VAIL	CO
—	970-479	not yet reported which blocks →	QWEST CORPORATION	9636	VAIL	CO
—	970-480	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	ESTES PARK	CO
—	970-481	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
—	970-482	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-483	not yet reported which blocks →	WIGGINS TEL. ASSN.	2209	WIGGINS	CO
—	970-484	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-485	6XXX7XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DILLON	CO
—	970-486	0XXX1XXX2XXX3XXX5XXX8XXX · 4 holders which blocks →	METROPCS, INC.	5562	DILLON	CO
—	970-487	not yet reported which blocks →	CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK	2185	COLLBRAN	CO
—	970-490	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-491	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-493	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-494	none assigned yet which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-495	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-496	not yet reported which blocks →	QWEST CORPORATION	9636	DILLON	CO
—	970-498	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-506	not yet reported which blocks →	QWEST CORPORATION	9636	GREELEY	CO
—	970-509	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FRASER	CO
—	970-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CO
—	970-513	not yet reported which blocks →	QWEST CORPORATION	9636	DILLON	CO
—	970-515	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
—	970-518	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
—	970-519	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	TELLURIDE	CO
—	970-520	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	STERLING	CO
—	970-521	not yet reported which blocks →	QWEST CORPORATION	9636	STERLING	CO
—	970-522	not yet reported which blocks →	QWEST CORPORATION	9636	STERLING	CO
—	970-523	not yet reported which blocks →	QWEST CORPORATION	9636	GRAND JCT	CO
—	970-524	not yet reported which blocks →	CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK	2185	GYPSUM	CO
—	970-526	6XXX7XXX · 2 holders which blocks →	QWEST CORPORATION	9636	STERLING	CO
—	970-527	1XXX8XXX9XXX · 3 holders which blocks →	DELTA COUNTY TELE-COMM, INC.	2184	PAONIA	CO
—	970-529	0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	QWEST CORPORATION	9636	CORTEZ	CO
—	970-531	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FRASER	CO
—	970-532	not yet reported which blocks →	QWEST CORPORATION	9636	BERTHOUD	CO
—	970-533	2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	QWEST CORPORATION	9636	MANCOS	CO
—	970-534	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
—	970-535	2XXX3XXX5XXX7XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9636	MEAD	CO
—	970-537	not yet reported which blocks →	UNION TELEPHONE COMPANY	013B	KREMMLING	CO
—	970-539	6XXX9XXX · 2 holders which blocks →	METROPCS, INC.	5562	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.