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 304
COMCAST IP PHONE, LLC 78
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
2025-05-30 304-397-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HURRICANE WV
2022-09-30 304-943-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN WV
2022-09-30 304-943-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN WV
2022-04-28 304-718-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ROWLESBURG WV
2022-04-25 304-568-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J TUNNELTON WV
2021-09-13 304-830-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON1 WV
2020-12-14 304-944-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BERKELYSPG WV
2020-12-10 304-505-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FOLLANSBEE WV
2020-12-10 304-557-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PRINCETON WV
2019-04-18 304-903-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J GRAFTON WV
2017-06-07 304-943-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN WV
2017-04-14 304-830-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON1 WV
2016-11-22 304-870-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SHEPHEDSTN WV
2016-09-26 304-930-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CHARLES TN WV
2016-08-02 304-238-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON1 WV
2016-04-28 304-322-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN WV
2016-03-28 304-901-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MARTINSBG WV
2015-11-30 304-821-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J INWOOD WV
2015-11-04 304-901-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MARTINSBG WV
2015-08-27 304-737-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WELLSBURG WV
2015-08-20 304-810-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON5 WV
2015-07-07 304-459-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHESTER WV
2015-07-01 304-800-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BLUEFIELD WV
2015-04-15 304-955-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HNTNGTNZN2 WV
2015-01-13 304-909-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON3 WV
2014-11-10 304-885-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHARLES TN WV
2014-10-01 304-821-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J INWOOD WV
2014-05-22 304-901-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MARTINSBG WV
2014-02-27 304-322-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN WV
2014-02-27 304-355-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PIEDMONT WV
2014-02-27 304-790-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J KEYSER WV
2014-02-14 304-905-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WHELNGZON1 WV
2013-12-06 304-350-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MARTINSBG WV
2013-06-17 304-594-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHEAT LAKE WV
2013-02-28 304-350-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MARTINSBG WV
2013-02-28 304-409-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BLUEWELL WV
2013-02-28 304-431-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PRINCETON WV
2013-02-28 304-467-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MATOAKA WV
2013-02-28 304-500-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BERKELYSPG WV
2013-02-28 304-535-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HARPESFRRY WV
2013-02-28 304-800-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BLUEFIELD WV
2013-02-28 304-821-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J INWOOD WV
2013-02-28 304-870-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SHEPHEDSTN WV
2013-02-26 304-458-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LEON WV
2013-02-26 304-486-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J PRICHARD WV
2013-02-26 304-762-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J UNIONRIDGE WV
2013-02-26 304-769-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHRLSTNZN6 WV
2013-02-26 304-814-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BUFFALO WV
2013-02-26 304-936-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WINFIELD WV
2013-02-26 304-948-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HNTNGTNZN2 WV

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.