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 256
COMCAST IP PHONE, LLC 63
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
2025-09-29 256-406-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FORT PAYNE AL
2023-10-31 256-985-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NEW MARKET AL
2023-08-10 256-501-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J ATHENS AL
2023-04-19 256-699-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LEESBURG AL
2023-04-19 256-877-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SAND ROCK AL
2022-08-05 256-870-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MADISON AL
2021-09-08 256-802-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ROGERSVL AL
2017-02-13 256-759-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2016-09-14 256-814-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SHEFFIELD AL
2016-08-23 256-413-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2016-08-23 256-964-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2016-08-16 256-367-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2016-05-09 256-970-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2016-05-09 256-970-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2016-04-05 256-646-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2016-04-05 256-716-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2016-01-28 256-261-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2015-08-21 256-980-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2015-08-14 256-305-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ATTALLA AL
2015-08-13 256-808-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2015-07-24 256-826-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SHEFFIELD AL
2015-03-26 256-515-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2015-02-05 256-415-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2015-02-05 256-801-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2014-04-25 256-384-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2013-10-14 256-312-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2013-10-14 256-320-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SHEFFIELD AL
2013-10-01 256-288-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2013-09-06 256-203-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2013-08-30 256-284-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2012-06-04 256-469-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2012-05-30 256-952-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2012-03-27 256-469-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2011-12-08 256-715-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2011-10-07 256-964-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2011-10-07 256-964-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2011-08-17 256-349-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2011-08-10 256-213-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2011-06-10 256-978-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SHEFFIELD AL
2011-01-20 256-715-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2010-06-07 256-349-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2009-10-27 256-248-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SHEFFIELD AL
2009-07-20 256-344-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ATTALLA AL
2009-05-04 256-517-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2009-03-26 256-712-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FLORENCE AL
2009-03-17 256-459-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2009-03-09 256-467-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2008-06-26 256-467-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GADSDEN AL
2008-06-26 256-585-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL
2008-06-26 256-585-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HUNTSVILLE AL

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.