NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 509
COMCAST IP PHONE, LLC 57
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
2023-05-05 509-798-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2023-05-05 509-798-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2023-05-05 509-798-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2023-04-03 509-825-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MEDICAL LK WA
2023-03-30 509-224-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHENEY WA
2020-10-08 509-408-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LIBERTY LK WA
2020-10-08 509-615-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ELK-GRNBLF WA
2020-10-08 509-621-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NEWMANLAKE WA
2020-10-08 509-890-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DEER PARK WA
2020-10-05 509-816-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2020-10-05 509-816-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2020-10-05 509-816-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2020-03-16 509-505-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2020-03-12 509-418-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2019-09-10 509-862-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2018-09-24 509-867-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2018-07-18 509-890-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DEER PARK WA
2017-11-08 509-862-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2016-02-05 509-934-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2015-12-30 509-960-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2015-10-29 509-960-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2015-08-17 509-381-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2015-05-21 509-598-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2014-06-17 509-309-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2014-06-17 509-309-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2013-12-13 509-919-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2013-10-17 509-919-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2012-12-14 509-822-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2011-09-22 509-808-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2011-08-11 509-321-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2011-08-11 509-340-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2010-09-29 509-241-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2010-09-29 509-242-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2010-08-10 509-703-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2009-07-17 509-368-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2008-11-26 509-315-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2008-11-26 509-315-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2008-07-02 509-315-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2008-07-02 509-315-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2008-06-02 509-255-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LIBERTY LK WA
2007-11-20 509-413-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2007-11-20 509-413-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2007-04-03 509-863-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2007-04-03 509-868-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2006-11-29 509-473-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2006-11-29 509-474-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2006-11-29 509-474-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2006-11-29 509-474-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2006-06-28 509-443-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2006-06-28 509-443-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.