NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

40 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 970
UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 20
ONVOY, LLC - CO 8
BANDWIDTH.COM CLEC, LLC - CO 3
T-MOBILE USA, INC. 2
EXIANT COMMUNICATIONS LLC 2
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2010-01-21 970-205-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F ASPEN CO
2010-01-21 970-235-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F ESTES PARK CO
2010-01-21 970-306-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F VAIL CO
2010-01-21 970-316-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F RIDGWAY CO
2010-01-21 970-335-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F DURANGO CO
2010-01-21 970-344-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F BERTHOUD CO
2010-01-21 970-364-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F GRANBY CO
2010-01-21 970-368-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F DILLON CO
2010-01-21 970-425-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F STERLING CO
2010-01-21 970-439-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F STEAMBOSPG CO
2010-01-21 970-456-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F GLENWD SPG CO
2010-01-21 970-460-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F WINDSOR CO
2010-01-21 970-660-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F JOHNSTMLKN CO
2010-01-21 970-703-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F PLATTEVL CO
2010-01-21 970-765-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F MONTROSE CO
2010-01-21 970-823-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F OLATHE CO
2010-01-13 970-534-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GREELEY CO
2010-01-07 970-366-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GLENWD SPG CO
2010-01-07 970-373-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GREELEY CO
2010-01-07 970-515-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GREELEY CO
2010-01-07 970-571-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 STERLING CO
2010-01-07 970-773-2XXX 2000–2999Assigned QWEST CORPORATION 9636 GRAND JCT CO
2010-01-07 970-773-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GRAND JCT CO
2010-01-07 970-773-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GRAND JCT CO
2009-12-28 970-760-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CO 6118 DILLON CO
2009-12-23 970-455-5XXX 5000–5999Assigned QWEST CORPORATION 9636 DILLON CO
2009-12-23 970-455-6XXX 6000–6999Assigned QWEST CORPORATION 9636 DILLON CO
2009-12-23 970-455-7XXX 7000–7999Assigned QWEST CORPORATION 9636 DILLON CO
2009-12-10 970-427-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FORTMORGAN CO
2009-12-10 970-646-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOVELAND CO
2009-12-08 970-599-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOVELAND CO
2009-12-08 970-775-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOVELAND CO
2009-12-07 970-575-5XXX 5000–5999Assigned ONVOY, LLC - CO 026D FRASER CO
2009-12-02 970-798-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F GRAND LAKE CO
2009-12-01 970-818-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FT COLLINS CO
2009-11-13 970-399-0XXX 0000–0999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DELTA CO
2009-11-11 970-510-3XXX 3000–3999Assigned ZIPPYTECH INCORPORATED 588A CARBONDALE CO
2009-11-09 970-237-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2009-11-06 970-403-8XXX 8000–8999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DURANGO CO
2009-11-04 970-685-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 LOVELAND CO
2009-11-03 970-373-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GREELEY CO
2009-11-03 970-373-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GREELEY CO
2009-11-03 970-779-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DURANGO CO
2009-10-30 970-403-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DURANGO CO
2009-10-20 970-279-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BASALT CO
2009-10-20 970-510-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CARBONDALE CO
2009-10-20 970-984-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NEW CASTLE CO
2009-10-13 970-232-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FT COLLINS CO
2009-10-08 970-235-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 ESTES PARK CO
2009-10-08 970-773-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GRAND JCT CO

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.