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 734
COMCAST IP PHONE, LLC 117
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
2023-09-18 734-937-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WHITMORELK MI
2022-10-12 734-643-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2022-10-12 734-643-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2022-10-12 734-785-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2022-09-28 734-345-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BELLEVILLE MI
2022-09-28 734-865-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BELLEVILLE MI
2022-09-22 734-982-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TRENTON MI
2022-09-22 734-982-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TRENTON MI
2022-09-20 734-597-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MONROE MI
2022-09-20 734-608-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LIVONIA MI
2022-09-20 734-608-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LIVONIA MI
2020-03-11 734-356-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2019-10-10 734-492-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2017-09-29 734-742-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LIVONIA MI
2017-09-08 734-359-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2017-08-18 734-800-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2017-04-06 734-359-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2017-02-08 734-359-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2017-02-08 734-359-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2017-02-08 734-359-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2017-02-08 734-359-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2017-01-23 734-228-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2016-12-15 734-318-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2016-09-08 734-263-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2016-08-03 734-228-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2016-04-28 734-773-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2016-03-09 734-351-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2015-10-05 734-977-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SALINE MI
2015-09-30 734-921-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROMULUS MI
2015-09-08 734-882-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2015-07-20 734-892-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2015-07-02 734-896-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J YPSILANTI MI
2015-04-08 734-593-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CHELSEA MI
2015-03-31 734-628-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MILAN MI
2015-01-15 734-256-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WILLIS MI
2014-10-21 734-288-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE MI
2014-10-21 734-304-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TRENTON MI
2014-09-15 734-743-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LIVONIA MI
2014-08-07 734-335-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2014-07-25 734-436-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2014-06-24 734-992-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ROMULUS MI
2014-05-27 734-725-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2014-05-08 734-725-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WAYNE MI
2014-02-18 734-927-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PLYMOUTH MI
2013-11-07 734-984-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FLAT ROCK MI
2013-11-07 734-984-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FLAT ROCK MI
2013-10-21 734-436-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2013-09-10 734-345-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J BELLEVILLE MI
2013-09-10 734-368-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2013-09-10 734-785-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WYANDOTTE 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.