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 351

ONVOY, LLC - MA 285

OMNIPOINT MIAMI E LICENSE, LLC 83

ONVOY SPECTRUM, LLC 74

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 40

PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 37

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
2019-01-24	351-200-8XXX	8000–8999	Assigned	ONVOY, LLC - MA	892D	ASHBY	MA
2019-01-24	351-200-9XXX	9000–9999	Assigned	ONVOY, LLC - MA	892D	ASHBY	MA
2019-01-23	351-777-5XXX	5000–5999	Assigned	ONVOY, LLC - MA	892D	HUBBARDSTN	MA
2019-01-23	351-777-6XXX	6000–6999	Assigned	ONVOY, LLC - MA	892D	HUBBARDSTN	MA
2019-01-22	351-444-3XXX	3000–3999	Assigned	ONVOY, LLC - MA	892D	IPSWICH	MA
2019-01-22	351-444-5XXX	5000–5999	Assigned	ONVOY, LLC - MA	892D	IPSWICH	MA
2018-12-20	351-208-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LOWELL	MA
2018-12-19	351-200-0XXX	0000–0999	Assigned	ONVOY, LLC - MA	892D	ASHBY	MA
2018-10-01	351-208-9XXX	9000–9999	Assigned	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	LOWELL	MA
2018-09-12	351-204-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	LAWRENCE	MA
2018-09-07	351-444-8XXX	8000–8999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	IPSWICH	MA
2018-08-09	351-333-6XXX	6000–6999	Assigned	ONVOY, LLC - MA	892D	HARVARD	MA
2018-08-02	351-208-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LOWELL	MA
2018-06-26	351-204-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	LAWRENCE	MA
2018-05-17	351-200-6XXX	6000–6999	Assigned	TC SYSTEMS, INC.	7135	ASHBY	MA
2018-03-06	351-322-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2018-03-02	351-666-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PEABODY	MA
2018-02-15	351-322-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2018-02-06	351-333-5XXX	5000–5999	Assigned	ONVOY, LLC - MA	892D	HARVARD	MA
2018-01-08	351-333-7XXX	7000–7999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	HARVARD	MA
2017-12-11	351-444-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	IPSWICH	MA
2017-12-05	351-322-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2017-12-05	351-322-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2017-11-30	351-277-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LAWRENCE	MA
2017-11-30	351-666-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PEABODY	MA
2017-11-29	351-277-2XXX	2000–2999	Assigned	ONVOY, LLC - MA	892D	LAWRENCE	MA
2017-11-29	351-277-3XXX	3000–3999	Assigned	ONVOY, LLC - MA	892D	LAWRENCE	MA
2017-09-27	351-666-6XXX	6000–6999	Assigned	ONVOY, LLC - MA	892D	PEABODY	MA
2017-08-14	351-322-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LOWELL	MA
2017-07-21	351-322-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2017-07-21	351-322-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2017-07-21	351-322-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LOWELL	MA
2017-06-12	351-277-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	LAWRENCE	MA
2017-04-28	351-277-0XXX	0000–0999	Assigned	ONVOY, LLC - MA	892D	LAWRENCE	MA
2017-04-27	351-333-8XXX	8000–8999	Assigned	TELNYX LLC	073H	HARVARD	MA
2017-04-27	351-777-9XXX	9000–9999	Assigned	TELNYX LLC	073H	HUBBARDSTN	MA
2017-04-18	351-444-1XXX	1000–1999	Assigned	TELNYX LLC	073H	IPSWICH	MA
2017-04-10	351-277-9XXX	9000–9999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	LAWRENCE	MA
2017-03-14	351-322-9XXX	9000–9999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	LOWELL	MA
2016-07-11	351-777-8XXX	8000–8999	Assigned	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	HUBBARDSTN	MA
2016-06-17	351-207-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MA	990E	GEORGETOWN	MA
2016-06-01	351-444-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	IPSWICH	MA
2016-05-27	351-207-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	GEORGETOWN	MA
2016-04-18	351-888-4XXX	4000–4999	Assigned	HD CARRIER LLC	321J	MERRIMAC	MA
2016-04-18	351-888-5XXX	5000–5999	Assigned	HD CARRIER LLC	321J	MERRIMAC	MA
2016-04-18	351-888-6XXX	6000–6999	Assigned	HD CARRIER LLC	321J	MERRIMAC	MA
2016-04-18	351-888-7XXX	7000–7999	Assigned	HD CARRIER LLC	321J	MERRIMAC	MA
2016-04-18	351-888-9XXX	9000–9999	Assigned	HD CARRIER LLC	321J	MERRIMAC	MA
2016-04-18	351-999-1XXX	1000–1999	Assigned	HD CARRIER LLC	321J	MANCHESTER	MA
2016-04-18	351-999-2XXX	2000–2999	Assigned	HD CARRIER LLC	321J	MANCHESTER	MA

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.