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 720

COMCAST IP PHONE, LLC 252

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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2023-09-27	720-761-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2022-03-25	720-997-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BENNETT	CO
2021-12-03	720-906-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BYERS	CO
2021-09-24	720-817-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	STRASBURG	CO
2021-01-05	720-756-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2021-01-05	720-756-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2021-01-05	720-756-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2021-01-05	720-756-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2021-01-05	720-760-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2021-01-05	720-760-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-09-11	720-769-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-04-09	720-716-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-04-09	720-716-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-03-16	720-762-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-03-16	720-762-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-02-21	720-674-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-02-21	720-674-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-02-21	720-674-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-02-21	720-674-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2020-01-23	720-712-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	FORTLUPTON	CO
2019-08-01	720-826-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-08-01	720-826-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-08-01	720-826-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-04-18	720-928-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	FORTLUPTON	CO
2019-04-08	720-866-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-04-08	720-866-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-02-11	720-750-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-02-11	720-750-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-02-11	720-750-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-02-11	720-750-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2019-02-11	720-750-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2018-11-19	720-614-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2018-11-08	720-727-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	LONGMONT	CO
2018-10-03	720-928-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	FORTLUPTON	CO
2018-09-24	720-923-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2018-09-24	720-923-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2018-09-24	720-923-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2018-05-02	720-753-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	FORTLUPTON	CO
2017-11-22	720-667-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2017-11-22	720-667-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2017-11-22	720-667-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2017-11-22	720-667-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2017-10-26	720-603-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO
2017-09-08	720-845-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	DENVER	CO

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.