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
2017-01-05	301-532-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	LAUREL238	MD
2017-01-05	301-850-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNG236Z14	MD
2016-12-30	301-291-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2016-12-30	301-347-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	WSHNGTNZN2	MD
2016-12-30	301-477-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	WSNG236Z13	MD
2016-12-08	301-746-3XXX	3000–3999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	FRIENDSVL	MD
2016-12-01	301-860-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2016-11-18	301-965-6XXX	6000–6999	Assigned	ONVOY, LLC - MD	876D	WSHNGTNZN6	MD
2016-11-16	301-810-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	BUCKEYSTN	MD
2016-11-09	301-532-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	LAUREL238	MD
2016-11-01	301-383-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2016-10-26	301-298-7XXX	7000–7999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	WSNG236Z15	MD
2016-10-26	301-715-8XXX	8000–8999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	WSNG236Z15	MD
2016-10-17	301-291-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2016-09-26	301-245-9XXX	9000–9999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	BITTINGER	MD
2016-09-26	301-453-9XXX	9000–9999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	KITZMILLER	MD
2016-09-26	301-786-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	MCCOOLE	MD
2016-09-26	301-895-6XXX	6000–6999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	GRANTSVL	MD
2016-09-22	301-223-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	WILLIAMSPT	MD
2016-09-22	301-508-6XXX	6000–6999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	MYERSVILLE	MD
2016-09-22	301-857-6XXX	6000–6999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	CLEAR SPG	MD
2016-09-02	301-383-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	WSNG236Z14	MD
2016-08-30	301-245-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	BITTINGER	MD
2016-08-30	301-245-8XXX	8000–8999	Assigned	ONVOY, LLC - MD	876D	BITTINGER	MD
2016-08-30	301-453-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	KITZMILLER	MD
2016-08-30	301-453-8XXX	8000–8999	Assigned	ONVOY, LLC - MD	876D	KITZMILLER	MD
2016-08-30	301-478-8XXX	8000–8999	Assigned	ONVOY, LLC - MD	876D	FLINTSTONE	MD
2016-08-30	301-478-9XXX	9000–9999	Assigned	ONVOY, LLC - MD	876D	FLINTSTONE	MD
2016-08-30	301-678-1XXX	1000–1999	Assigned	ONVOY, LLC - MD	876D	HANCOCK	MD
2016-08-30	301-750-1XXX	1000–1999	Assigned	ONVOY, LLC - MD	876D	FRIENDSVL	MD
2016-08-30	301-750-9XXX	9000–9999	Assigned	ONVOY, LLC - MD	876D	FRIENDSVL	MD
2016-08-30	301-786-3XXX	3000–3999	Assigned	ONVOY, LLC - MD	876D	MCCOOLE	MD
2016-08-30	301-786-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	MCCOOLE	MD
2016-08-30	301-834-1XXX	1000–1999	Assigned	ONVOY, LLC - MD	876D	BRUNSWICK	MD
2016-08-30	301-857-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	CLEAR SPG	MD
2016-08-30	301-857-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	CLEAR SPG	MD
2016-08-30	301-895-7XXX	7000–7999	Assigned	ONVOY, LLC - MD	876D	GRANTSVL	MD
2016-08-30	301-895-9XXX	9000–9999	Assigned	ONVOY, LLC - MD	876D	GRANTSVL	MD
2016-08-30	301-969-9XXX	9000–9999	Assigned	ONVOY, LLC - MD	876D	BRUNSWICK	MD
2016-08-22	301-321-4XXX	4000–4999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-761-9XXX	9000–9999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-822-0XXX	0000–0999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-822-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-822-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-822-7XXX	7000–7999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-822-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-945-1XXX	1000–1999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-945-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-22	301-945-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN11	MD
2016-08-12	301-612-0XXX	0000–0999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	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.