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 440
COMCAST IP PHONE, LLC 25
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
2019-08-16 440-613-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2017-11-28 440-857-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J CLEVELAND OH
2017-11-20 440-587-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BRECKSVL OH
2017-11-20 440-588-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J TRINITY OH
2017-11-15 440-457-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J NOROYALTON OH
2017-11-14 440-558-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2017-11-14 440-782-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OLMSTEDFLS OH
2017-11-08 440-586-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BEREA OH
2017-09-28 440-857-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CLEVELAND OH
2017-08-04 440-558-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2017-03-08 440-558-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2014-12-29 440-660-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BRECKSVL OH
2013-12-17 440-427-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OLMSTEDFLS OH
2013-07-01 440-340-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2012-06-20 440-799-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CLEVELAND OH
2011-02-24 440-481-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2008-05-29 440-345-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2007-01-24 440-882-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH
2006-08-07 440-799-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CLEVELAND OH
2005-09-20 440-457-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NOROYALTON OH
2005-09-20 440-625-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BEREA OH
2005-09-20 440-627-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BRECKSVL OH
2005-09-20 440-793-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J OLMSTEDFLS OH
2005-09-20 440-827-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TRINITY OH
2005-09-20 440-882-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J VICTORY OH

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.