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 610
COMCAST IP PHONE, LLC 49
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
2026-02-25 610-641-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TOPTON PA
2022-10-25 610-214-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J COOPERSBG PA
2021-07-20 610-412-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PUGHTOWN PA
2021-07-20 610-934-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN23 PA
2020-02-28 610-738-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J W CHESTER PA
2019-07-11 610-396-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J READING PA
2019-06-10 610-576-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN28 PA
2019-06-10 610-897-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN31 PA
2019-05-24 610-671-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN29 PA
2019-04-10 610-723-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN22 PA
2018-05-22 610-915-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN14 PA
2017-10-03 610-396-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2016-09-21 610-234-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN31 PA
2015-05-06 610-206-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN23 PA
2015-05-01 610-652-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SASSAMNSVL PA
2014-06-26 610-615-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CENTER PT PA
2014-06-10 610-553-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN17 PA
2013-10-11 610-615-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CENTER PT PA
2013-09-09 610-474-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ROYERSFORD PA
2013-09-06 610-713-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN17 PA
2013-08-15 610-897-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN31 PA
2013-07-22 610-915-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN14 PA
2013-06-24 610-816-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J READING PA
2013-05-07 610-537-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN14 PA
2013-03-20 610-816-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2012-12-17 610-679-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J COATESVL PA
2012-04-24 610-345-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WEST GROVE PA
2011-06-14 610-701-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J W CHESTER PA
2009-04-23 610-652-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SASSAMNSVL PA
2009-04-20 610-702-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BALLY PA
2009-04-20 610-901-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MORGANTOWN PA
2008-10-16 610-979-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ATGLEN PA
2008-05-21 610-370-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J READING PA
2008-05-06 610-985-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J READING PA
2007-09-10 610-741-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J READING PA
2007-09-10 610-898-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J READING PA
2007-02-15 610-743-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2007-02-15 610-927-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2007-02-15 610-927-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J READING PA
2006-09-25 610-200-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN14 PA
2006-09-06 610-750-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2006-09-06 610-750-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J READING PA
2006-09-06 610-750-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J READING PA
2006-06-20 610-488-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BERNVILLE PA
2006-06-20 610-589-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WOMELSDORF PA
2006-06-20 610-693-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ROBESONIA PA
2006-05-25 610-743-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J READING PA
2006-05-25 610-743-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J READING PA
2006-02-14 610-406-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA

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.