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 949
COMCAST PHONE OF CALIFORNIA, LLC 151
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-09-24 949-617-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2019-08-14 949-423-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NEWPORTBCH CA
2019-08-14 949-516-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LAGUNA BCH CA
2019-04-17 949-742-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L TRABUCO CA
2018-12-19 949-503-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CAPITRNVLY CA
2018-12-19 949-503-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CAPITRNVLY CA
2018-12-19 949-503-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CAPITRNVLY CA
2018-12-19 949-503-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CAPITRNVLY CA
2018-12-12 949-317-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2018-12-12 949-446-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2018-12-12 949-446-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2018-12-12 949-446-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2018-08-01 949-418-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2018-08-01 949-418-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2018-08-01 949-418-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2018-05-07 949-316-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2018-05-07 949-367-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2018-05-07 949-538-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CAPITRNVLY CA
2018-05-07 949-774-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2018-03-14 949-763-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NEWPORTBCH CA
2017-10-18 949-404-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2017-09-28 949-401-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RNCHOVIEJO CA
2017-09-26 949-312-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CAPITRNVLY CA
2017-09-26 949-316-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2017-09-26 949-329-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L TRABUCO CA
2017-09-26 949-520-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NEWPORTBCH CA
2017-09-26 949-549-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LAGUNA BCH CA
2017-09-19 949-317-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2017-07-03 949-880-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2017-03-23 949-576-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2016-09-13 949-664-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2016-08-22 949-619-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2016-08-04 949-662-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NEWPORTBCH CA
2016-07-27 949-771-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2016-05-24 949-577-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2016-05-16 949-518-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2016-05-04 949-518-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2015-07-20 949-563-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2015-06-02 949-501-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2015-04-23 949-524-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NEWPORTBCH CA
2014-10-28 949-656-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2014-08-20 949-537-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2014-03-24 949-446-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2013-09-04 949-430-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2013-07-01 949-396-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2012-10-09 949-381-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2012-08-23 949-381-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA
2011-09-20 949-356-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2011-07-06 949-380-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SADLBK VLY CA
2011-06-01 949-988-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L IRVINE CA

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.