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
2016-08-12	301-612-1XXX	1000–1999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-612-3XXX	3000–3999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-612-4XXX	4000–4999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-612-5XXX	5000–5999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-612-7XXX	7000–7999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-612-8XXX	8000–8999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-612-9XXX	9000–9999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-889-1XXX	1000–1999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-889-3XXX	3000–3999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-889-4XXX	4000–4999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-889-5XXX	5000–5999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-889-6XXX	6000–6999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-12	301-889-7XXX	7000–7999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-08-01	301-547-6XXX	6000–6999	Assigned	NUSO, LLC	551G	WSHNGTNZN2	MD
2016-07-18	301-893-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSHNGTNZN6	MD
2016-06-24	301-383-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	WSNG236Z14	MD
2016-06-24	301-603-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	WSNGTNZN11	MD
2016-06-16	301-393-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	HAGERSTOWN	MD
2016-06-16	301-532-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	LAUREL238	MD
2016-06-07	301-372-5XXX	5000–5999	Assigned	PAETEC ITEL, LLC	829J	WSNGTNZN16	MD
2016-05-03	301-747-2XXX	2000–2999	Assigned	IP HORIZON LLC	515J	WSHNGTNZN6	MD
2016-05-02	301-242-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	BRANDYWINE	MD
2016-05-02	301-259-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	TOMPKINSVL	MD
2016-05-02	301-391-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	DAMASCS236	MD
2016-05-02	301-430-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	WSNG236Z14	MD
2016-05-02	301-690-4XXX	4000–4999	Assigned	IP HORIZON LLC	515J	LEONARDTN	MD
2016-05-02	301-771-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	WSHNGTNZN2	MD
2016-04-20	301-205-1XXX	1000–1999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-2XXX	2000–2999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-3XXX	3000–3999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-4XXX	4000–4999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-6XXX	6000–6999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-7XXX	7000–7999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-8XXX	8000–8999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-205-9XXX	9000–9999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-04-20	301-612-2XXX	2000–2999	Assigned	HD CARRIER LLC	321J	WSNG238Z14	MD
2016-03-29	301-485-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	WSHNGTNZN6	MD
2016-03-29	301-686-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	WSHNGTNZN6	MD
2016-03-24	301-532-4XXX	4000–4999	Assigned	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	7591	LAUREL238	MD
2016-03-23	301-745-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	HAGERSTOWN	MD
2016-03-16	301-307-1XXX	1000–1999	Assigned	ONVOY, LLC - MD	876D	WSNG238Z13	MD
2016-03-16	301-307-2XXX	2000–2999	Assigned	ONVOY, LLC - MD	876D	WSNG238Z13	MD
2016-03-11	301-889-8XXX	8000–8999	Assigned	ONVOY, LLC - MD	876D	WSNG238Z14	MD
2016-03-11	301-889-9XXX	9000–9999	Assigned	ONVOY, LLC - MD	876D	WSNG238Z14	MD
2016-03-10	301-389-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	WSNG236Z13	MD
2016-03-10	301-389-6XXX	6000–6999	Assigned	ONVOY, LLC - MD	876D	WSNG236Z13	MD
2016-03-02	301-238-7XXX	7000–7999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN16	MD
2016-03-02	301-238-8XXX	8000–8999	Assigned	ONVOY, LLC - MD	876D	WSNGTNZN16	MD
2016-02-17	301-298-2XXX	2000–2999	Assigned	ONVOY, LLC - MD	876D	WSNG236Z15	MD
2016-02-17	301-298-3XXX	3000–3999	Assigned	ONVOY, LLC - MD	876D	WSNG236Z15	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.