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 206
COMCAST IP PHONE, LLC 111
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
2020-10-23 206-644-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-23 206-644-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-10-21 206-627-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DES MOINES WA
2020-10-21 206-627-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J DES MOINES WA
2020-03-17 206-888-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2020-02-14 206-888-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2019-06-20 206-806-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2019-06-05 206-591-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BAINBDG IS WA
2018-11-30 206-513-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2016-12-06 206-503-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2016-10-17 206-565-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BAINBDG IS WA
2016-04-13 206-717-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2016-04-01 206-460-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DES MOINES WA
2016-02-29 206-413-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-12-21 206-492-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-10-29 206-492-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-08-18 206-900-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-06-04 206-739-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-03-05 206-566-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-01-23 206-800-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J RICHMNDBCH WA
2015-01-12 206-693-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-11-21 206-566-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-06-18 206-556-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-06-18 206-556-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-06-18 206-556-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-06-04 206-294-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-06-04 206-294-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-05-20 206-294-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-04-04 206-946-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2014-01-14 206-946-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-10-28 206-212-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DES MOINES WA
2013-10-22 206-259-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J VASHON WA
2013-08-16 206-582-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-08-16 206-582-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-08-05 206-317-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BAINBDG IS WA
2013-05-15 206-258-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-05-15 206-258-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-05-15 206-258-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-04-01 206-557-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-02-15 206-858-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2013-02-11 206-651-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J DES MOINES WA
2012-12-11 206-735-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA

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.