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
2001-09-26	970-443	6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
2001-09-14	970-683	0XXX1XXX8XXX9XXX · 2 holders which blocks →	QWEST CORPORATION	9636	GRAND JCT	CO
2001-09-11	970-672	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	FT COLLINS	CO
2001-09-11	970-673	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	GREELEY	CO
2001-06-28	970-430	4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
2001-06-28	970-530	not yet reported which blocks →	PAETEC ITEL, LLC	829J	FT COLLINS	CO
2001-06-28	970-612	6XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	LOVELAND	CO
2001-06-14	970-388	9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	WINDSOR	CO
2001-05-14	970-299	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	ONVOY, LLC - CO	026D	CORTEZ	CO
2001-05-11	970-466	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	STERLING	CO
2001-05-11	970-467	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	FORTMORGAN	CO
2001-05-04	970-729	4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TELLURIDE	CO
2001-04-30	970-799	9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DURANGO	CO
2001-04-26	970-280	not yet reported which blocks →	SAN ISABEL TELECOM, INC. - CO	4164	EAGLE	CO
2001-04-24	970-300	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	ASPEN	CO
2001-04-24	970-404	3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	GLENWD SPG	CO
2001-04-24	970-405	not yet reported which blocks →	T-MOBILE USA, INC.	6529	GREELEY	CO
2001-04-16	970-393	1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	VAIL	CO
2001-03-27	970-337	not yet reported which blocks →	SAN ISABEL TELECOM, INC. - CO	4164	EAGLE	CO
2001-02-21	970-321	not yet reported which blocks →	UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS	1772	CRAIG	CO
2001-02-21	970-322	not yet reported which blocks →	UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS	1772	GRAND JCT	CO
2001-02-13	970-239	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	TELLURIDE	CO
2001-01-16	970-205	9XXX which blocks →	QWEST CORPORATION	9636	ASPEN	CO
—	970-200	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	GRAND JCT	CO
—	970-201	4XXX5XXX8XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	GRAND JCT	CO
—	970-202	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	BERTHOUD	CO
—	970-203	none assigned yet which blocks →	QWEST CORPORATION	9636	LOVELAND	CO
—	970-204	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-206	none assigned yet which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-207	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-208	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GRAND JCT	CO
—	970-209	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MONTROSE	CO
—	970-210	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GRAND JCT	CO
—	970-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CO
—	970-212	6XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CO	6118	FT COLLINS	CO
—	970-213	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	FT COLLINS	CO
—	970-214	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
—	970-215	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
—	970-216	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	GRAND JCT	CO
—	970-217	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FT COLLINS	CO
—	970-218	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FT COLLINS	CO
—	970-219	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FT COLLINS	CO
—	970-220	not yet reported which blocks →	UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS	1772	RANGELY	CO
—	970-221	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-222	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	FT COLLINS	CO
—	970-223	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-224	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-225	5XXX which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-226	not yet reported which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
—	970-227	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	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.