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
2017-12-07	301-508-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MYERSVILLE	MD
2017-11-29	301-228-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	FREDERICK	MD
2017-11-24	301-549-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ASHTON236	MD
2017-11-24	301-549-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ASHTON236	MD
2017-11-14	301-666-2XXX	2000–2999	Assigned	ONVOY, LLC - MD	876D	WSNG236Z14	MD
2017-11-13	301-913-1XXX	1000–1999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN2	MD
2017-11-13	301-913-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN2	MD
2017-11-13	301-913-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN2	MD
2017-11-13	301-913-7XXX	7000–7999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN2	MD
2017-11-13	301-913-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN2	MD
2017-11-09	301-287-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN11	MD
2017-11-09	301-287-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN11	MD
2017-11-09	301-287-6XXX	6000–6999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN11	MD
2017-10-30	301-913-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSHNGTNZN2	MD
2017-09-27	301-215-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WSHNGTNZN2	MD
2017-09-20	301-368-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	DAMASCS236	MD
2017-09-20	301-383-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2017-09-07	301-234-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	WSNGTNZN16	MD
2017-09-06	301-941-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSHNGTNZN2	MD
2017-08-21	301-347-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	WSHNGTNZN2	MD
2017-08-04	301-508-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MYERSVILLE	MD
2017-08-04	301-508-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MYERSVILLE	MD
2017-08-04	301-508-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MYERSVILLE	MD
2017-07-27	301-746-0XXX	0000–0999	Assigned	TELNYX LLC	073H	FRIENDSVL	MD
2017-07-27	301-786-0XXX	0000–0999	Assigned	TELNYX LLC	073H	MCCOOLE	MD
2017-07-27	301-842-9XXX	9000–9999	Assigned	TELNYX LLC	073H	CLEAR SPG	MD
2017-07-27	301-895-1XXX	1000–1999	Assigned	TELNYX LLC	073H	GRANTSVL	MD
2017-07-18	301-545-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	WSNGTNZN10	MD
2017-07-18	301-888-3XXX	3000–3999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN16	MD
2017-07-18	301-888-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN16	MD
2017-07-18	301-888-7XXX	7000–7999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN16	MD
2017-07-11	301-756-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2017-07-07	301-664-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSHNGTNZN2	MD
2017-07-07	301-888-0XXX	0000–0999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN16	MD
2017-06-29	301-780-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	WSNG236Z15	MD
2017-06-23	301-348-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2017-06-20	301-383-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2017-06-09	301-746-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	FRIENDSVL	MD
2017-06-02	301-936-1XXX	1000–1999	Assigned	TELNYX LLC	073H	HAGERSTOWN	MD
2017-04-28	301-374-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	WALDORF	MD
2017-04-17	301-368-8XXX	8000–8999	Assigned	TELNYX LLC	073H	DAMASCS236	MD
2017-04-17	301-720-8XXX	8000–8999	Assigned	TELNYX LLC	073H	BRANDYWINE	MD
2017-03-29	301-393-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	HAGERSTOWN	MD
2017-03-15	301-753-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	WSHNGTNZN6	MD
2017-03-02	301-517-7XXX	7000–7999	Assigned	TELNYX LLC	073H	WSNGTNZN10	MD
2017-03-02	301-664-1XXX	1000–1999	Assigned	TELNYX LLC	073H	WSHNGTNZN2	MD
2017-03-02	301-756-1XXX	1000–1999	Assigned	TELNYX LLC	073H	WSNG236Z14	MD
2017-03-01	301-383-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2017-02-09	301-532-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	LAUREL238	MD
2017-02-09	301-532-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	LAUREL238	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.