Recent thousands-block assignments

14 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, last 30 days — NPA 413

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6

BANDWIDTH.COM CLEC, LLC - MA 5

NEW CINGULAR WIRELESS PCS, LLC - DC 1

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1

AHOI LLC 1

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
2017-04-18	413-299-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	HATFIELD	MA
2017-04-04	413-436-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	WARREN	MA
2017-04-04	413-595-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	HAMPDEN	MA
2017-03-23	413-278-5XXX	5000–5999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	SPRINGFLD	MA
2017-03-23	413-829-8XXX	8000–8999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	GREENFIELD	MA
2017-03-17	413-377-4XXX	4000–4999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	CHICOPEE	MA
2017-03-15	413-270-8XXX	8000–8999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	NORTHAMPTN	MA
2017-03-15	413-409-5XXX	5000–5999	Assigned	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	HOLYOKE	MA
2017-03-15	413-625-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	SHELBUNFLS	MA
2017-03-10	413-770-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PITTSFIELD	MA
2017-03-03	413-727-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	NORTHAMPTN	MA
2017-02-23	413-270-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	NORTHAMPTN	MA
2017-02-22	413-475-8XXX	8000–8999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	GREENFIELD	MA
2017-02-17	413-356-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CHICOPEE	MA
2017-01-31	413-417-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	SPRINGFLD	MA
2017-01-17	413-507-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	SPRINGFLD	MA
2017-01-04	413-800-3XXX	3000–3999	Assigned	CRC COMMUNICATIONS OF MAINE, INC. - MA	236F	AMHERST	MA
2016-12-28	413-449-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PITTSFIELD	MA
2016-12-06	413-507-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	SPRINGFLD	MA
2016-12-05	413-998-9XXX	9000–9999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	SOUTHWICK	MA
2016-11-23	413-507-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	SPRINGFLD	MA
2016-11-23	413-507-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	SPRINGFLD	MA
2016-11-10	413-445-1XXX	1000–1999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	PITTSFIELD	MA
2016-11-03	413-644-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	GREATBNGTN	MA
2016-10-07	413-347-8XXX	8000–8999	Assigned	TWC IP ENABLED SERVICES, LLC	793K	PITTSFIELD	MA
2016-09-29	413-270-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NORTHAMPTN	MA
2016-09-27	413-507-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	SPRINGFLD	MA
2016-09-23	413-412-1XXX	1000–1999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NORTHADAMS	MA
2016-09-22	413-507-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	SPRINGFLD	MA
2016-09-22	413-507-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	SPRINGFLD	MA
2016-09-21	413-217-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	WILLIAMSTN	MA
2016-09-19	413-300-4XXX	4000–4999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	DALTON	MA
2016-09-06	413-378-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CHICOPEE	MA
2016-09-06	413-800-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	AMHERST	MA
2016-09-06	413-800-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	AMHERST	MA
2016-09-06	413-800-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	AMHERST	MA
2016-08-16	413-612-8XXX	8000–8999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	CHICOPEE	MA
2016-07-22	413-645-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	GREATBNGTN	MA
2016-06-20	413-768-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	GREENFIELD	MA
2016-06-14	413-333-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SPRINGFLD	MA
2016-06-13	413-307-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - MA	990E	ADAMS	MA
2016-06-13	413-409-1XXX	1000–1999	Assigned	OMNIPOINT MIAMI E LICENSE, LLC	6889	HOLYOKE	MA
2016-06-09	413-356-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CHICOPEE	MA
2016-06-03	413-232-5XXX	5000–5999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	W STOCKBDG	MA
2016-06-03	413-353-5XXX	5000–5999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	HOUSATONIC	MA
2016-06-03	413-496-3XXX	3000–3999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	PITTSFIELD	MA
2016-06-03	413-600-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	STOCKBDG	MA
2016-06-03	413-655-4XXX	4000–4999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	HINSDALE	MA
2016-05-18	413-707-0XXX	0000–0999	Assigned	ONVOY, LLC - MA	892D	SPRINGFLD	MA
2016-05-18	413-707-1XXX	1000–1999	Assigned	ONVOY, LLC - MA	892D	SPRINGFLD	MA

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.