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
2006-01-04 203-689-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J GUILFORD CT
2006-01-04 203-935-7XXX 7000–7999Assigned METROPCS, INC. 5562 MERIDEN CT
2005-12-28 203-285-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2005-12-28 203-391-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2005-12-28 203-612-4XXX 4000–4999Assigned CSC VOICE, LLC 612K BRIDGEPORT CT
2005-12-27 203-347-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BYRAM CT
2005-12-27 203-527-1XXX 1000–1999Assigned METROPCS, INC. 5562 WATERBURY CT
2005-12-16 203-306-9XXX 9000–9999Assigned METROPCS, INC. 5562 MILFORD CT
2005-12-16 203-490-7XXX 7000–7999Assigned METROPCS, INC. 5562 NAUGATUCK CT
2005-12-14 203-814-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2005-12-13 203-358-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2005-12-13 203-504-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 STAMFORD CT
2005-12-08 203-423-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 WILTON CT
2005-12-08 203-493-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 GEORGETOWN CT
2005-12-08 203-652-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NEW CANAAN CT
2005-12-01 203-419-7XXX 7000–7999Assigned METROPCS, INC. 5562 WATERBURY CT
2005-12-01 203-419-8XXX 8000–8999Assigned METROPCS, INC. 5562 WATERBURY CT
2005-11-30 203-465-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2005-11-22 203-202-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 DARIEN CT
2005-11-22 203-304-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NEWTOWN CT
2005-11-22 203-307-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 FAIRFIELD CT
2005-11-22 203-307-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 FAIRFIELD CT
2005-11-21 203-307-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J FAIRFIELD CT
2005-11-21 203-463-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 SEYMOUR CT
2005-11-17 203-828-7XXX 7000–7999Assigned METROPCS, INC. 5562 SEYMOUR CT
2005-11-14 203-433-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRANFORD CT
2005-11-14 203-503-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2005-11-10 203-953-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J BRIDGEPORT CT
2005-11-10 203-983-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J GREENWICH CT
2005-11-07 203-859-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2005-11-03 203-571-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WESTPORT CT
2005-11-03 203-815-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2005-11-01 203-628-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DANBURY CT
2005-11-01 203-633-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WOLCOTT CT
2005-10-28 203-409-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J OLDGRNWICH CT
2005-10-20 203-347-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BYRAM CT
2005-10-20 203-391-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J STAMFORD CT
2005-10-20 203-954-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2005-10-19 203-460-2XXX 2000–2999Assigned METROPCS, INC. 5562 DANBURY CT
2005-10-18 203-383-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2005-10-18 203-455-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2005-10-18 203-499-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2005-10-14 203-803-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWALK CT
2005-10-11 203-407-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2005-10-05 203-220-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 TRUMBULL CT
2005-10-05 203-604-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NORWALK CT
2005-10-05 203-616-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DANBURY CT
2005-10-05 203-898-3XXX 3000–3999Assigned METROPCS, INC. 5562 DARIEN CT
2005-10-05 203-953-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRIDGEPORT CT
2005-10-03 203-812-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN 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.