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 281

COMCAST IP PHONE, LLC 161

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
2020-08-13	281-934-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	BROOKSHIRE	TX
2020-08-07	281-399-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	SPLENDORA	TX
2019-11-08	281-934-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	BROOKSHIRE	TX
2019-09-24	281-505-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	KATY	TX
2019-04-30	281-729-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	DICKINSON	TX
2018-11-01	281-721-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2018-04-30	281-623-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	HUMBLE	TX
2017-01-12	281-272-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2016-12-06	281-835-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2016-10-26	281-375-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	BROOKSHIRE	TX
2015-08-11	281-612-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	FRIENDSWD	TX
2015-01-16	281-545-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	SMITHERSLK	TX
2014-11-24	281-666-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	CROSBY	TX
2014-11-12	281-672-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	LEAGUECITY	TX
2014-10-29	281-406-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2014-09-25	281-549-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	KEMAH	TX
2014-09-17	281-771-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	SPRING	TX
2014-08-22	281-502-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	HIGHLANDS	TX
2014-07-14	281-670-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2014-07-08	281-525-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	LEAGUECITY	TX
2014-06-24	281-982-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	WESTFIELD	TX
2014-06-12	281-967-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	DICKINSON	TX
2014-06-10	281-957-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	KEMAH	TX
2014-05-19	281-665-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	KATY	TX
2014-04-21	281-786-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	APOLLO	TX
2014-03-25	281-525-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	LEAGUECITY	TX
2014-03-25	281-525-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	LEAGUECITY	TX
2013-12-13	281-760-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2013-10-18	281-665-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	KATY	TX
2013-09-10	281-717-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	BARKER	TX
2013-08-19	281-258-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2013-07-23	281-837-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	BAYTOWN	TX
2013-07-23	281-947-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	FRIENDSWD	TX
2013-07-18	281-208-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	STAFFORD	TX
2013-07-18	281-532-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	KEMAH	TX
2013-06-18	281-665-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	KATY	TX
2013-06-05	281-372-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2013-06-05	281-506-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2012-12-12	281-628-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	BAYTOWN	TX
2012-10-16	281-206-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	BARKER	TX
2012-10-16	281-397-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BAMMEL	TX
2012-10-05	281-339-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	KEMAH	TX
2012-09-10	281-915-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	ARCOLA	TX
2012-08-21	281-624-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	BAMMEL	TX
2012-05-03	281-396-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	KATY	TX
2011-10-04	281-724-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	LEAGUECITY	TX
2011-09-01	281-201-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	SUGAR LAND	TX
2011-09-01	281-205-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	TOMBALL	TX
2011-09-01	281-529-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	HSTNSUBURB	TX
2011-09-01	281-724-0XXX	0000–0999	Assigned	COMCAST IP PHONE, LLC	318J	LEAGUECITY	TX

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.