NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 410
ONVOY, LLC - MD 2
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-10-04 410-220-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-10-04 410-220-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ELKRIDGE MD
2011-10-04 410-844-0XXX 0000–0999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-3XXX 3000–3999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-4XXX 4000–4999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-5XXX 5000–5999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-6XXX 6000–6999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-7XXX 7000–7999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-8XXX 8000–8999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-10-04 410-844-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G BALTIMORE MD
2011-09-29 410-387-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-09-29 410-387-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-09-29 410-387-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-09-29 410-387-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-09-29 410-387-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-09-29 410-387-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-09-29 410-399-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BEL AIR MD
2011-09-29 410-399-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BEL AIR MD
2011-09-29 410-564-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-29 410-992-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 COLUMBIA MD
2011-09-29 410-999-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GLENBURNIE MD
2011-09-29 410-999-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GLENBURNIE MD
2011-09-29 410-999-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 GLENBURNIE MD
2011-09-28 410-260-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 SEVERNA PK MD
2011-09-28 410-946-4XXX 4000–4999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-09-26 410-387-0XXX 0000–0999Assigned VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 4492 BALTIMORE MD
2011-09-20 410-387-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BALTIMORE MD
2011-09-15 410-870-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F PARKVILLE MD
2011-09-15 410-999-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F GLENBURNIE MD
2011-09-07 410-567-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-567-6XXX 6000–6999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-717-2XXX 2000–2999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-717-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-717-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ELKRIDGE MD
2011-08-26 410-805-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-26 410-805-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-25 410-753-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 PIKESVILLE MD
2011-08-22 410-870-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F PARKVILLE MD
2011-08-18 410-622-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-18 410-622-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-18 410-622-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2011-08-18 410-622-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE 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.