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 843
COMCAST IP PHONE, LLC 76
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
2023-09-11 843-288-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HARDEEVL SC
2023-05-03 843-739-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NWALTERBOR SC
2023-05-03 843-967-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SWALTERBOR SC
2022-10-25 843-502-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ST HELENA SC
2020-10-14 843-984-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2020-10-14 843-984-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2020-06-12 843-974-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2019-12-16 843-891-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAUREL BAY SC
2019-09-20 843-809-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MONCKS COR SC
2017-11-15 843-594-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SUMMERVL SC
2017-08-30 843-459-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2016-10-20 843-996-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2016-06-28 843-936-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2015-09-16 843-990-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2015-08-27 843-936-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2015-04-14 843-620-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HOLLYWOOD SC
2015-03-10 843-207-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2015-03-10 843-805-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2014-10-13 843-952-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2014-09-24 843-936-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2014-07-17 843-203-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2014-04-04 843-203-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2014-01-27 843-885-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ISLE PALMS SC
2013-12-11 843-203-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2013-12-03 843-352-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2013-10-07 843-212-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2013-09-06 843-352-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2013-08-26 843-297-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2013-08-08 843-285-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SUMMERVL SC
2013-06-21 843-410-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2013-05-01 843-352-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2012-12-03 843-605-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BEAUFORT SC
2012-10-22 843-764-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-10-22 843-974-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-07-12 843-718-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-07-12 843-818-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-07-12 843-974-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-05-11 843-202-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-03-29 843-612-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ST HELENA SC
2012-03-21 843-388-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2012-03-16 843-414-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2012-02-17 843-388-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2011-07-26 843-641-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2010-06-07 843-654-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2009-07-14 843-606-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2009-05-19 843-718-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2009-05-19 843-718-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2009-02-25 843-789-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2009-02-25 843-789-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC
2008-08-29 843-277-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHARLESTON SC

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.