Recent thousands-block assignments

17 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 443

ONVOY, LLC - MD 8

NEW CINGULAR WIRELESS PCS, LLC - DC 4

VERSATEL LLC 1

OPENTACT INC. 1

LEVEL 3 COMMUNICATIONS, 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
2016-01-07	443-787-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BEL AIR	MD
2016-01-07	443-960-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2016-01-07	443-960-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2016-01-06	443-678-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	PARKVILLE	MD
2016-01-06	443-960-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	GLENBURNIE	MD
2016-01-04	443-507-4XXX	4000–4999	Assigned	QUANTUM TELECOMMUNICATIONS, INC. - MD	2596	HAMPSTEAD	MD
2016-01-04	443-583-2XXX	2000–2999	Assigned	QUANTUM TELECOMMUNICATIONS, INC. - MD	2596	COLUMBIA	MD
2015-12-30	443-978-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	SALISBURY	MD
2015-12-23	443-530-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	DUNDALK	MD
2015-12-23	443-734-3XXX	3000–3999	Assigned	ONVOY, LLC - MD	876D	SEVERN	MD
2015-12-22	443-456-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	EDGEWOOD	MD
2015-12-22	443-903-3XXX	3000–3999	Assigned	ONVOY, LLC - MD	876D	BEL AIR	MD
2015-12-17	443-552-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2015-12-15	443-450-9XXX	9000–9999	Assigned	ONVOY, LLC - MD	876D	PIKESVILLE	MD
2015-12-15	443-730-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	ESSEX	MD
2015-12-11	443-998-7XXX	7000–7999	Assigned	ONVOY, LLC - MD	876D	PARKVILLE	MD
2015-12-09	443-319-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	COLUMBIA	MD
2015-12-09	443-319-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	COLUMBIA	MD
2015-12-09	443-712-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	REISTERSTN	MD
2015-12-09	443-796-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PIKESVILLE	MD
2015-12-09	443-877-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NORTH EAST	MD
2015-12-07	443-230-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	ODENTON	MD
2015-12-07	443-273-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	REISTERSTN	MD
2015-12-07	443-353-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	COCKEYSVL	MD
2015-12-07	443-532-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	PRINCEFRCK	MD
2015-12-07	443-576-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	RANDALLSTN	MD
2015-12-07	443-593-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	ELKTON	MD
2015-12-07	443-607-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	WEST RIVER	MD
2015-12-07	443-649-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	SPARROWSPT	MD
2015-12-07	443-792-6XXX	6000–6999	Assigned	IP HORIZON LLC	515J	BRYNPKLNCM	MD
2015-12-03	443-484-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	EDGEWOOD	MD
2015-12-01	443-963-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2015-11-24	443-554-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CHASE	MD
2015-11-24	443-554-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CHASE	MD
2015-11-12	443-606-6XXX	6000–6999	Assigned	ONVOY, LLC - MD	876D	FORK	MD
2015-11-09	443-432-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PRINCEFRCK	MD
2015-10-30	443-933-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	COCKEYSVL	MD
2015-10-28	443-678-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	PARKVILLE	MD
2015-10-28	443-678-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	PARKVILLE	MD
2015-10-27	443-406-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	ELKTON	MD
2015-10-27	443-775-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	ANNAPOLIS	MD
2015-10-20	443-657-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	RANDALLSTN	MD
2015-10-14	443-578-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	COCKEYSVL	MD
2015-09-30	443-775-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2015-09-22	443-464-0XXX	0000–0999	Assigned	ONVOY, LLC - MD	876D	CHURCHVL	MD
2015-09-22	443-663-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	WOODLAWN	MD
2015-09-22	443-952-4XXX	4000–4999	Assigned	ONVOY, LLC - MD	876D	WESTMINSTR	MD
2015-09-16	443-328-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SYKESVILLE	MD
2015-09-09	443-554-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CHASE	MD
2015-09-09	443-565-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	RANDALLSTN	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.