Recent thousands-block assignments

1 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 301

ONVOY, LLC - MD 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
2010-01-26	301-288-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WSNGTNZN12	MD
2010-01-26	301-323-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	LAUREL236	MD
2010-01-26	301-485-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WSHNGTNZN6	MD
2010-01-26	301-531-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WSHNGTNZN4	MD
2010-01-26	301-531-5XXX	5000–5999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WSHNGTNZN4	MD
2010-01-20	301-246-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	NANJEMOY	MD
2010-01-20	301-337-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	GAITHERSBG	MD
2010-01-20	301-337-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	GAITHERSBG	MD
2010-01-20	301-541-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WSHNGTNZN5	MD
2010-01-20	301-744-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	INDIANHEAD	MD
2010-01-14	301-804-4XXX	4000–4999	Assigned	PAETEC ITEL, LLC	829J	ASHTON236	MD
2010-01-11	301-377-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LAUREL236	MD
2010-01-11	301-377-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LAUREL236	MD
2010-01-07	301-852-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WSHNGTNZN4	MD
2010-01-05	301-202-7XXX	7000–7999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	WSHNGTNZN2	MD
2010-01-05	301-202-8XXX	8000–8999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	WSHNGTNZN2	MD
2010-01-05	301-202-9XXX	9000–9999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	WSHNGTNZN2	MD
2009-12-23	301-375-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	INDIANHEAD	MD
2009-12-23	301-782-8XXX	8000–8999	Assigned	PAETEC ITEL, LLC	829J	BRANDYWINE	MD
2009-12-10	301-636-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	WSHNGTNZN5	MD
2009-12-03	301-327-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WSNG238Z15	MD
2009-11-18	301-842-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	CLEAR SPG	MD
2009-11-04	301-703-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	MOUNT AIRY	MD
2009-11-02	301-355-1XXX	1000–1999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	GAITHERSBG	MD
2009-11-02	301-660-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	KEEDYSVL	MD
2009-10-29	301-605-1XXX	1000–1999	Assigned	PAETEC ITEL, LLC	829J	WSNGTNZN10	MD
2009-10-19	301-820-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	GAITHERSBG	MD
2009-10-19	301-859-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	OAKLAND	MD
2009-09-30	301-355-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	GAITHERSBG	MD
2009-09-29	301-715-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	WSNG236Z15	MD
2009-09-15	301-375-5XXX	5000–5999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	INDIANHEAD	MD
2009-09-15	301-684-1XXX	1000–1999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	INDIANHEAD	MD
2009-09-15	301-684-3XXX	3000–3999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	INDIANHEAD	MD
2009-09-15	301-684-7XXX	7000–7999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	INDIANHEAD	MD
2009-08-24	301-501-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	OAKLAND	MD
2009-08-24	301-969-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	BRUNSWICK	MD
2009-08-21	301-304-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	WALKERSVL	MD
2009-08-05	301-832-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WSHNGTNZN4	MD
2009-07-29	301-355-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	GAITHERSBG	MD
2009-07-29	301-355-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	GAITHERSBG	MD
2009-07-29	301-686-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN6	MD
2009-07-14	301-378-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	FREDERICK	MD
2009-06-12	301-968-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	WSHNGTNZN2	MD
2009-05-26	301-225-0XXX	0000–0999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD
2009-05-26	301-225-1XXX	1000–1999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD
2009-05-26	301-225-2XXX	2000–2999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD
2009-05-26	301-225-3XXX	3000–3999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD
2009-05-26	301-225-4XXX	4000–4999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD
2009-05-26	301-225-5XXX	5000–5999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD
2009-05-26	301-225-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNG236Z14	MD

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.