NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 970
FASTTRACK COMMUNICATIONS, INC. - CO 28
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
2019-08-23 970-200-1XXX 1000–1999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B GRAND JCT CO
2015-06-17 970-693-6XXX 6000–6999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B MEEKER CO
2015-05-20 970-676-5XXX 5000–5999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DOLORES CO
2014-12-17 970-426-4XXX 4000–4999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DURANGO CO
2014-12-04 970-714-7XXX 7000–7999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B GREELEY CO
2014-03-31 970-633-7XXX 7000–7999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B OURAY CO
2013-12-27 970-341-6XXX 6000–6999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B OLATHE CO
2013-05-28 970-442-6XXX 6000–6999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B IGNACIO CO
2012-02-08 970-648-7XXX 7000–7999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B GUNNISON CO
2011-11-08 970-478-4XXX 4000–4999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B NORWOOD CO
2011-11-08 970-826-8XXX 8000–8999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B CRAIG CO
2010-05-04 970-510-4XXX 4000–4999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B CARBONDALE CO
2009-11-13 970-399-0XXX 0000–0999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DELTA CO
2009-11-06 970-403-8XXX 8000–8999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DURANGO CO
2008-11-21 970-964-1XXX 1000–1999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B MONTROSE CO
2008-06-05 970-387-3XXX 3000–3999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B SILVERTON CO
2008-06-05 970-639-3XXX 3000–3999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B FRUITA CO
2008-04-24 970-533-5XXX 5000–5999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B MANCOS CO
2008-04-09 970-729-7XXX 7000–7999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B TELLURIDE CO
2008-03-25 970-369-2XXX 2000–2999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B TELLURIDE CO
2008-03-24 970-399-4XXX 4000–4999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DELTA CO
2007-10-05 970-403-1XXX 1000–1999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DURANGO CO
2007-08-30 970-529-7XXX 7000–7999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B CORTEZ CO
2006-05-08 970-208-9XXX 9000–9999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B GRAND JCT CO
2006-05-08 970-444-0XXX 0000–0999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B BAYFIELD CO
2006-05-08 970-497-5XXX 5000–5999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B MONTROSE CO
2006-05-08 970-529-2XXX 2000–2999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B CORTEZ CO
2005-10-21 970-403-0XXX 0000–0999Assigned FASTTRACK COMMUNICATIONS, INC. - CO 330B DURANGO 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.