NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 551
CABLEVISION LIGHTPATH, INC. - NJ 30
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
2025-10-14 551-431-0XXX 0000–0999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 JERSEYCITY NJ
2025-04-03 551-421-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 UNION CITY NJ
2025-04-03 551-421-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 UNION CITY NJ
2024-03-29 551-372-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 KEARNY NJ
2023-12-07 551-387-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 JERSEYCITY NJ
2023-12-07 551-387-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 JERSEYCITY NJ
2023-11-13 551-313-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 CLIFFSIDE NJ
2023-11-09 551-385-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 WYCKOFF NJ
2023-11-06 551-366-9XXX 9000–9999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 ENGLEWOOD NJ
2023-11-06 551-899-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HASBROKHTS NJ
2021-05-27 551-320-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RUTHERFORD NJ
2021-05-27 551-320-8XXX 8000–8999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RUTHERFORD NJ
2019-07-29 551-305-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2019-07-29 551-305-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2019-02-25 551-300-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 UNION CITY NJ
2019-01-30 551-557-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 PARK RIDGE NJ
2018-08-24 551-286-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2018-08-24 551-286-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2018-08-24 551-286-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2018-05-11 551-251-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2018-04-17 551-217-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RAMSEY NJ
2018-02-27 551-248-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 CLOSTER NJ
2017-09-29 551-212-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 TEANECK NJ
2017-09-29 551-212-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 TEANECK NJ
2017-09-01 551-502-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2017-07-05 551-775-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2017-05-10 551-276-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 RIDGEWOOD NJ
2016-05-12 551-237-2XXX 2000–2999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2014-07-02 551-228-6XXX 6000–6999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 HACKENSACK NJ
2013-11-21 551-444-3XXX 3000–3999Assigned CABLEVISION LIGHTPATH, INC. - NJ 4948 FAIR LAWN NJ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.