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 863
COMCAST IP PHONE, LLC 51
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
2025-12-10 863-396-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MOOREHAVEN FL
2025-05-23 863-371-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WINTER HVN FL
2023-12-12 863-341-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LAKELAND FL
2023-12-10 863-376-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MULBERRY FL
2022-08-30 863-275-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAKE WALES FL
2022-08-30 863-432-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J FROSTPROOF FL
2021-09-02 863-358-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BARTOW FL
2021-09-02 863-358-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BARTOW FL
2021-09-02 863-484-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OKEECHOBEE FL
2021-09-02 863-484-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J OKEECHOBEE FL
2021-08-26 863-531-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J LAKEPLACID FL
2021-08-26 863-531-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAKEPLACID FL
2020-08-14 863-664-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2020-01-15 863-658-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2016-08-05 863-456-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAKE WALES FL
2015-10-16 863-451-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2015-10-06 863-342-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL
2015-09-03 863-230-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL
2015-08-24 863-599-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CLEWISTON FL
2015-07-15 863-222-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WAUCHULA FL
2015-07-10 863-230-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL
2015-06-03 863-302-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL
2015-04-15 863-674-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL
2015-04-10 863-484-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J OKEECHOBEE FL
2015-03-09 863-866-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HAINESCITY FL
2015-03-03 863-517-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL
2014-08-04 863-800-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BARTOW FL
2014-03-14 863-949-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LAKE WALES FL
2014-01-16 863-531-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LAKEPLACID FL
2014-01-13 863-201-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J AVON PARK FL
2013-11-26 863-304-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2013-11-19 863-212-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J AVON PARK FL
2013-04-01 863-623-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OKEECHOBEE FL
2012-02-21 863-537-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BARTOW FL
2012-01-12 863-314-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2011-08-30 863-589-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAKE WALES FL
2011-08-12 863-301-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CLEWISTON FL
2011-08-12 863-623-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J OKEECHOBEE FL
2011-05-03 863-474-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ZOLFO SPG FL
2010-11-18 863-448-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WAUCHULA FL
2010-04-13 863-658-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2009-05-20 863-622-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FORT MEADE FL
2009-05-20 863-657-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J AVON PARK FL
2009-05-20 863-658-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SEBRING FL
2009-05-20 863-659-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAKEPLACID FL
2009-04-28 863-223-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAKE WALES FL
2009-04-28 863-537-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BARTOW FL
2009-04-28 863-546-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FROSTPROOF FL
2008-12-10 863-256-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HAINESCITY FL
2008-07-10 863-342-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LABELLE FL

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.