NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 203
ONVOY, LLC - CT 5
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
2008-10-30 203-807-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NORWALK CT
2008-10-30 203-816-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F TRUMBULL CT
2008-10-30 203-828-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F SEYMOUR CT
2008-10-30 203-936-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEW HAVEN CT
2008-10-30 203-936-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEW HAVEN CT
2008-10-30 203-936-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEW HAVEN CT
2008-10-22 203-308-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 ANSONIDRBY CT
2008-10-22 203-917-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2008-10-20 203-450-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEPORT CT
2008-10-20 203-505-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWALK CT
2008-10-20 203-721-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 WATERBURY CT
2008-10-20 203-721-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 WATERBURY CT
2008-10-17 203-942-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2008-10-09 203-995-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-09 203-995-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 BRIDGEPORT CT
2008-10-06 203-306-6XXX 6000–6999Assigned METROPCS, INC. 5562 MILFORD CT
2008-10-03 203-600-0XXX 0000–0999Assigned METROPCS, INC. 5562 MERIDEN CT
2008-10-03 203-600-1XXX 1000–1999Assigned METROPCS, INC. 5562 MERIDEN CT
2008-10-03 203-600-2XXX 2000–2999Assigned METROPCS, INC. 5562 MERIDEN CT
2008-10-03 203-600-3XXX 3000–3999Assigned METROPCS, INC. 5562 MERIDEN CT
2008-10-03 203-600-4XXX 4000–4999Assigned METROPCS, INC. 5562 MERIDEN CT
2008-10-03 203-600-5XXX 5000–5999Assigned METROPCS, INC. 5562 MERIDEN CT
2008-10-03 203-684-4XXX 4000–4999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-684-9XXX 9000–9999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-802-0XXX 0000–0999Assigned METROPCS, INC. 5562 WATERBURY CT
2008-10-03 203-802-1XXX 1000–1999Assigned METROPCS, INC. 5562 WATERBURY CT
2008-10-03 203-802-9XXX 9000–9999Assigned METROPCS, INC. 5562 WATERBURY CT
2008-10-03 203-850-0XXX 0000–0999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-850-1XXX 1000–1999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-850-2XXX 2000–2999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-850-3XXX 3000–3999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-850-4XXX 4000–4999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-850-8XXX 8000–8999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-10-03 203-850-9XXX 9000–9999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2008-09-25 203-681-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - CT 350E BYRAM CT
2008-09-25 203-681-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - CT 350E BYRAM CT
2008-09-25 203-813-6XXX 6000–6999Assigned YMAX COMMUNICATIONS CORP. - CT 350E BYRAM CT
2008-09-18 203-405-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WOODBURY CT
2008-09-18 203-983-1XXX 1000–1999Assigned VERIZON NEW YORK, INC. 9104 GREENWICH CT
2008-09-18 203-983-2XXX 2000–2999Assigned VERIZON NEW YORK, INC. 9104 GREENWICH CT
2008-09-15 203-960-0XXX 0000–0999Assigned CABLEVISION LIGHTPATH, INC. - CT 4950 STAMFORD CT
2008-09-15 203-960-1XXX 1000–1999Assigned CABLEVISION LIGHTPATH, INC. - CT 4950 STAMFORD CT

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.