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
—	970-371	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GREELEY	CO
—	970-372	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	FT COLLINS	CO
—	970-373	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	GREELEY	CO
—	970-374	not yet reported which blocks →	CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK	2185	DINOSAUR	CO
—	970-375	not yet reported which blocks →	QWEST CORPORATION	9636	DURANGO	CO
—	970-376	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VAIL	CO
—	970-377	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-378	not yet reported which blocks →	QWEST CORPORATION	9636	GREELEY	CO
—	970-379	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GLENWD SPG	CO
—	970-380	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FORTMORGAN	CO
—	970-381	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
—	970-382	1XXX which blocks →	QWEST CORPORATION	9636	DURANGO	CO
—	970-383	not yet reported which blocks →	PLAINS COOP. TEL. ASSN., INC.	2199	ANTON	CO
—	970-384	not yet reported which blocks →	QWEST CORPORATION	9636	GLENWD SPG	CO
—	970-385	not yet reported which blocks →	QWEST CORPORATION	9636	DURANGO	CO
—	970-386	not yet reported which blocks →	EASTERN SLOPE RURAL TEL. ASSN., INC.	2186	WOODROW	CO
—	970-387	2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks →	QWEST CORPORATION	9636	SILVERTON	CO
—	970-389	9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DILLON	CO
—	970-390	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VAIL	CO
—	970-391	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-392	not yet reported which blocks →	QWEST CORPORATION	9636	GREELEY	CO
—	970-395	not yet reported which blocks →	QWEST CORPORATION	9636	GREELEY	CO
—	970-396	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GREELEY	CO
—	970-397	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GREELEY	CO
—	970-399	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	FASTTRACK COMMUNICATIONS, INC. - CO	330B	DELTA	CO
—	970-401	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	VAIL	CO
—	970-402	not yet reported which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-406	3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DILLON	CO
—	970-407	none assigned yet which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-409	1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DILLON	CO
—	970-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CO
—	970-412	not yet reported which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-416	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-418	1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	METROPCS, INC.	5562	DILLON	CO
—	970-419	9XXX which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-420	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FT COLLINS	CO
—	970-421	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	STEAMBOSPG	CO
—	970-426	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	DURANGO	CO
—	970-427	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	FORTMORGAN	CO
—	970-429	4XXX5XXX8XXX · 2 holders which blocks →	QWEST CORPORATION	9636	ASPEN	CO
—	970-434	not yet reported which blocks →	QWEST CORPORATION	9636	GRAND JCT	CO
—	970-435	none assigned yet which blocks →	QWEST CORPORATION	9636	SO LARAMIE	CO
—	970-437	not yet reported which blocks →	WIGGINS TEL. ASSN.	2209	NEW RAYMER	CO
—	970-440	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CO	026D	RIFLE	CO
—	970-441	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FORTMORGAN	CO
—	970-444	0–9 XXXall 10 · 4 holders which blocks →	FASTTRACK COMMUNICATIONS, INC. - CO	330B	BAYFIELD	CO
—	970-445	1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	VAIL	CO
—	970-447	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	FRASER	CO
—	970-448	not yet reported which blocks →	GREAT PLAINS COMMUNICATIONS, INC.	1577	W VENANGO	CO
—	970-449	0–9 XXXall 10 · 5 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	3467	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.