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 612
COMCAST IP PHONE, LLC 53
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
2023-10-25 612-525-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2023-10-25 612-525-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2023-10-25 612-525-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2023-10-25 612-525-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2022-09-29 612-489-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2022-09-29 612-489-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2022-09-29 612-489-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2022-09-29 612-489-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-10-05 612-452-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-02-12 612-446-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2019-01-31 612-428-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2018-02-01 612-383-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2017-09-29 612-286-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2017-08-22 612-274-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2016-12-28 612-540-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2016-05-05 612-249-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2015-08-07 612-400-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2015-06-11 612-500-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2014-01-16 612-248-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2012-05-11 612-315-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2012-05-11 612-315-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2012-05-11 612-315-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2012-05-11 612-315-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2011-11-22 612-224-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2011-09-07 612-223-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2011-07-25 612-200-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2011-07-05 612-200-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2010-12-28 612-367-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2010-09-03 612-545-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2009-02-12 612-259-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2009-02-12 612-259-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2007-11-20 612-353-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2007-11-20 612-353-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2007-11-20 612-353-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2007-05-07 612-354-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2007-05-07 612-354-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2007-05-07 612-354-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2006-11-21 612-886-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2006-11-21 612-886-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2006-11-21 612-886-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2005-06-07 612-345-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2005-06-07 612-345-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2005-06-07 612-345-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN
2005-02-28 612-584-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TWINCITIES MN

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.