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 860
COMCAST IP PHONE, LLC 196
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
2023-09-26 860-361-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LITCHFIELD CT
2023-06-15 860-981-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WATERTOWN CT
2022-10-03 860-821-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J PUTNAM CT
2021-10-28 860-217-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SIMSBURY CT
2020-09-24 860-507-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FARMINGTON CT
2020-09-24 860-606-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FARMINGTON CT
2020-09-24 860-894-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN CT
2020-09-24 860-894-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN CT
2019-11-07 860-850-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NIANTIC CT
2019-10-09 860-375-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ROCKVILLE CT
2019-10-09 860-847-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WINDSOR CT
2019-08-29 860-300-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NORWICH CT
2019-08-23 860-980-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MYSTIC CT
2019-04-17 860-544-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J COVENTRY CT
2019-02-28 860-894-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN CT
2019-01-25 860-791-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER CT
2018-11-26 860-606-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FARMINGTON CT
2018-11-26 860-846-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PLAINVILLE CT
2018-09-18 860-850-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NIANTIC CT
2018-07-27 860-973-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BRISTOL CT
2017-11-15 860-413-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SIMSBURY CT
2017-11-15 860-730-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER CT
2017-10-10 860-807-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN CT
2017-10-06 860-500-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HARTFORD CT
2017-10-04 860-736-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SOUTHINGTN CT
2017-10-04 860-758-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WINDSORLKS CT
2017-10-04 860-781-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GLASTONBY CT
2017-10-04 860-792-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PUTNAM CT
2017-10-04 860-835-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ENFIELD CT
2017-10-04 860-971-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J STAFFD SPG CT
2017-10-03 860-764-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CANTON CT
2017-10-03 860-855-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PLAINVILLE CT
2017-10-03 860-858-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROCKVILLE CT
2017-06-19 860-500-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HARTFORD CT
2017-05-19 860-609-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SOUTHINGTN CT
2017-05-16 860-339-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OLD SAYBRK CT
2017-03-14 860-791-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MANCHESTER CT
2016-12-29 860-431-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SIMSBURY CT
2016-10-14 860-375-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ROCKVILLE CT
2016-05-17 860-507-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FARMINGTON CT
2016-01-25 860-740-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN CT
2016-01-14 860-846-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PLAINVILLE CT
2015-12-30 860-726-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J HARTFORD CT
2015-11-06 860-731-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WINDSOR CT
2015-10-28 860-595-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HARTFORD CT
2015-10-02 860-596-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAKEVILLE CT
2015-09-24 860-544-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J COVENTRY CT
2015-09-03 860-764-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CANTON CT
2015-08-25 860-603-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J COLCHESTER CT
2015-08-17 860-973-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BRISTOL CT

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.