NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 203
PEERLESS NETWORK OF CONNECTICUT, LLC - CT 85
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
2021-02-22 203-896-5XXX 5000–5999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MADISON CT
2020-09-25 203-896-4XXX 4000–4999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MADISON CT
2018-09-20 203-457-3XXX 3000–3999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F GUILFORD CT
2016-11-14 203-408-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F REDDING CT
2015-06-17 203-900-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F GREENWICH CT
2013-04-08 203-580-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F BYRAM CT
2013-04-08 203-580-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F BYRAM CT
2013-04-05 203-242-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HUNTINGTON CT
2013-04-05 203-318-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MADISON CT
2013-04-05 203-344-7XXX 7000–7999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F OLDGRNWICH CT
2013-04-05 203-405-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WOODBURY CT
2013-04-05 203-424-2XXX 2000–2999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F DARIEN CT
2013-04-05 203-427-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MERIDEN CT
2013-04-05 203-456-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F DANBURY CT
2013-04-05 203-456-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F DANBURY CT
2013-04-05 203-484-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F BRANFORD CT
2013-04-05 203-486-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WOODBURY CT
2013-04-05 203-529-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WILTON CT
2013-04-05 203-533-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F GUILFORD CT
2013-04-05 203-563-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WILTON CT
2013-04-05 203-587-4XXX 4000–4999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F GEORGETOWN CT
2013-04-05 203-587-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F GEORGETOWN CT
2013-04-05 203-590-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F TRUMBULL CT
2013-04-05 203-590-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F TRUMBULL CT
2013-04-05 203-599-7XXX 7000–7999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MERIDEN CT
2013-04-05 203-633-7XXX 7000–7999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WOLCOTT CT
2013-04-05 203-633-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WOLCOTT CT
2013-04-05 203-635-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WESTPORT CT
2013-04-05 203-635-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WESTPORT CT
2013-04-05 203-678-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WALLINGFD CT
2013-04-05 203-680-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEW HAVEN CT
2013-04-05 203-689-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F GUILFORD CT
2013-04-05 203-693-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MILFORD CT
2013-04-05 203-693-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MILFORD CT
2013-04-05 203-718-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F CHESHIRE CT
2013-04-05 203-780-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEW HAVEN CT
2013-04-05 203-793-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WALLINGFD CT
2013-04-05 203-871-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F BRANFORD CT
2013-04-05 203-872-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F CHESHIRE CT
2013-04-05 203-875-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F DARIEN CT
2013-04-05 203-896-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MADISON CT
2013-04-05 203-989-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F STAMFORD CT
2013-04-05 203-990-5XXX 5000–5999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F OLDGRNWICH CT
2013-04-05 203-998-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F STAMFORD CT
2013-04-04 203-408-1XXX 1000–1999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F REDDING CT
2013-04-04 203-408-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F REDDING CT
2013-04-04 203-442-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEW CANAAN CT
2013-04-04 203-594-8XXX 8000–8999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEW CANAAN CT
2013-04-04 203-894-2XXX 2000–2999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F RIDGEFIELD CT
2013-04-04 203-894-6XXX 6000–6999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F RIDGEFIELD 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.