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 805
COMCAST PHONE OF CALIFORNIA, LLC 47
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
2024-03-29 805-972-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMPOC CA
2023-04-19 805-694-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA YNEZ CA
2020-01-15 805-803-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2018-12-12 805-869-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2018-12-12 805-869-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2018-12-12 805-869-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2018-12-12 805-869-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2018-11-20 805-819-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMPOC CA
2017-11-13 805-318-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CARPINTRIA CA
2017-11-13 805-679-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2017-09-12 805-862-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2017-04-17 805-693-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA YNEZ CA
2017-04-12 805-837-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2017-02-24 805-883-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2015-11-19 805-862-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2015-08-11 805-770-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2015-04-22 805-631-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2014-10-01 805-743-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMPOC CA
2014-06-20 805-623-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2014-04-22 805-697-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA YNEZ CA
2013-08-29 805-770-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2013-07-17 805-623-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2013-05-22 805-770-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2012-11-28 805-324-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2011-09-01 805-332-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2011-09-01 805-430-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMPOC CA
2011-07-19 805-318-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CARPINTRIA CA
2011-07-19 805-770-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2011-05-04 805-845-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2010-09-09 805-770-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2010-08-18 805-314-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2010-04-28 805-741-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMPOC CA
2010-04-13 805-845-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2009-12-07 805-354-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2009-10-26 805-845-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2009-07-06 805-845-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2009-05-18 805-361-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2008-10-02 805-845-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2008-05-15 805-287-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2008-05-15 805-691-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA YNEZ CA
2008-05-13 805-819-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMPOC CA
2007-10-31 805-845-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2007-10-31 805-845-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2007-02-14 805-845-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2007-02-14 805-845-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2006-02-14 805-220-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CARPINTRIA CA
2006-02-13 805-845-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA

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.