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 248
COMCAST IP PHONE, LLC 143
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
2019-12-19 248-928-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TROY MI
2019-06-05 248-940-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2018-11-26 248-692-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NORTHVILLE MI
2018-04-12 248-963-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER MI
2018-03-01 248-307-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2017-09-28 248-970-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2017-08-15 248-863-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WALLEDLAKE MI
2017-07-17 248-951-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2017-04-06 248-940-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2017-02-08 248-450-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2016-12-28 248-829-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J AUBURN HTS MI
2016-12-14 248-728-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2016-11-11 248-472-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MILFDWH LK MI
2016-08-02 248-934-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2016-07-18 248-422-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TROY MI
2016-06-23 248-965-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2016-05-04 248-281-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2016-01-29 248-590-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2016-01-29 248-706-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2016-01-15 248-951-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2015-11-11 248-843-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CLARKSTON MI
2015-11-10 248-710-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER MI
2015-09-21 248-791-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2015-08-21 248-965-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2015-07-31 248-938-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NORTHVILLE MI
2015-07-22 248-516-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J FARMINGTON MI
2015-07-01 248-847-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2015-04-17 248-791-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2015-04-15 248-617-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SOUTH LYON MI
2015-04-14 248-839-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2015-04-09 248-328-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HOLLY MI
2015-04-02 248-607-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2015-03-31 248-929-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAKE ORION MI
2014-11-28 248-509-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J TROY MI
2014-11-24 248-383-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DRAYTON PL MI
2014-11-21 248-480-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2014-09-30 248-413-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER MI
2014-07-16 248-564-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J AUBURN HTS MI
2014-07-16 248-817-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J TROY MI
2014-07-07 248-206-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2014-07-01 248-480-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2014-06-30 248-717-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MILFDWH LK MI
2014-06-24 248-301-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J COMMERCE MI
2014-05-27 248-622-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2014-04-08 248-221-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2014-01-24 248-268-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2014-01-08 248-385-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2013-11-27 248-973-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2013-11-14 248-301-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J COMMERCE MI
2013-11-08 248-309-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI

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.