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
2012-09-06 970-305-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-09-06 970-305-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-09-06 970-439-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F STEAMBOSPG CO
2012-09-06 970-541-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F LOVELAND CO
2012-08-29 970-305-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-08-28 970-317-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DURANGO CO
2012-08-28 970-549-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GRAND JCT CO
2012-08-23 970-616-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 GREELEY CO
2012-08-14 970-549-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRAND JCT CO
2012-08-13 970-317-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DURANGO CO
2012-08-13 970-441-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FORTMORGAN CO
2012-08-13 970-628-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GRAND JCT CO
2012-08-13 970-989-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GLENWD SPG CO
2012-08-10 970-541-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOVELAND CO
2012-08-08 970-480-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F ESTES PARK CO
2012-08-02 970-541-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CO 6118 LOVELAND CO
2012-07-31 970-616-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GREELEY CO
2012-07-30 970-317-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DURANGO CO
2012-07-18 970-616-6XXX 6000–6999Assigned ONVOY, LLC - CO 026D GREELEY CO
2012-07-06 970-286-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-07-06 970-573-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GREELEY CO
2012-07-06 970-775-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 LOVELAND CO
2012-07-05 970-578-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 JOHNSTMLKN CO
2012-06-27 970-571-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 STERLING CO
2012-06-26 970-449-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FT COLLINS CO
2012-06-21 970-235-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ESTES PARK CO
2012-06-15 970-658-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CO 6118 FT COLLINS CO
2012-06-08 970-438-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F PALISADE CO
2012-06-07 970-286-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-06-07 970-549-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CO 6118 GRAND JCT CO
2012-06-06 970-423-4XXX 4000–4999Assigned ONVOY, LLC - CO 026D BRECKENRDG CO
2012-05-25 970-578-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F JOHNSTMLKN CO
2012-05-25 970-658-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F FT COLLINS CO
2012-05-25 970-775-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F LOVELAND CO
2012-05-25 970-795-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F WINDSOR CO
2012-05-25 970-834-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F EATON CO
2012-05-23 970-549-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F GRAND JCT CO
2012-05-17 970-367-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CO 6118 STEAMBOSPG CO
2012-05-14 970-343-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F VAIL CO
2012-05-04 970-317-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DURANGO CO
2012-05-04 970-627-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F GRAND LAKE CO
2012-05-03 970-368-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F DILLON CO
2012-05-01 970-286-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FT COLLINS CO
2012-05-01 970-549-5XXX 5000–5999Assigned QWEST CORPORATION 9636 GRAND JCT CO
2012-04-30 970-236-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F ASPEN CO
2012-04-24 970-616-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F GREELEY CO
2012-04-24 970-840-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F BRUSH CO
2012-03-26 970-989-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GLENWD SPG CO
2012-03-23 970-616-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 GREELEY CO
2012-03-21 970-549-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F 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.