NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 406
CHARTER IP ENABLED SERVICES, LLC 116
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
2025-03-24 406-722-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ALBERTON MT
2025-03-20 406-967-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WORDEN MT
2025-03-18 406-307-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CANYON CRK MT
2025-02-24 406-348-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HUNTLEY MT
2024-09-18 406-626-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FRENCHTOWN MT
2024-03-27 406-718-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K DARBY MT
2024-03-05 406-833-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RONAN MT
2024-02-28 406-332-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PABLO MT
2021-04-09 406-353-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HARLEM MT
2021-04-09 406-357-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CHINOOK MT
2021-04-09 406-680-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MALTA MT
2020-08-06 406-468-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CASCADE MT
2019-03-08 406-266-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TOWNSEND MT
2019-03-08 406-313-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BOULDER MT
2017-08-10 406-622-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORTBENTON MT
2017-04-24 406-932-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BIG TIMBER MT
2016-11-16 406-304-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MISSOULA MT
2016-10-26 406-601-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2015-10-15 406-897-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K COLUMBIFLS MT
2014-09-18 406-200-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2014-09-18 406-894-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2014-06-17 406-692-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K YELLOW BAY MT
2014-05-15 406-219-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BOZEMAN MT
2014-05-15 406-540-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MISSOULA MT
2014-05-01 406-314-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KALISPELL MT
2014-04-23 406-361-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HAMILTON MT
2014-04-18 406-315-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREATFALLS MT
2014-04-18 406-371-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2014-04-18 406-502-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HELENA MT
2014-02-26 406-534-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2013-11-07 406-702-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2013-10-16 406-730-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WHITEFISH MT
2013-10-16 406-926-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MISSOULA MT
2013-07-19 406-300-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KALISPELL MT
2012-04-10 406-315-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREATFALLS MT
2012-04-04 406-404-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BOZEMAN MT
2012-04-04 406-502-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HELENA MT
2012-04-04 406-969-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2012-03-14 406-317-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MISSOULA MT
2012-03-14 406-702-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2012-02-28 406-813-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELGRADE MT
2012-02-07 406-299-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BUTTE MT
2012-01-10 406-969-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2012-01-10 406-969-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2011-11-03 406-926-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MISSOULA MT
2011-11-02 406-309-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KALISPELL MT
2011-10-19 406-315-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREATFALLS MT
2011-09-30 406-969-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2011-07-22 406-926-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MISSOULA MT
2011-06-28 406-577-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BOZEMAN MT

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.