NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2005-10-03 203-814-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-09-30 203-208-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRANFORD CT
2005-09-30 203-651-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 CHESHIRE CT
2005-09-26 203-502-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-09-21 203-528-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2005-09-21 203-540-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-09-21 203-540-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-09-21 203-586-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WOODBURY CT
2005-09-09 203-540-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEPORT CT
2005-09-09 203-540-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEPORT CT
2005-09-09 203-814-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2005-09-07 203-448-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2005-09-07 203-499-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2005-09-07 203-499-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2005-09-07 203-803-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWALK CT
2005-09-07 203-898-4XXX 4000–4999Assigned METROPCS, INC. 5562 DARIEN CT
2005-08-30 203-534-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-08-30 203-534-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-08-30 203-534-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-08-29 203-302-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - CT 4950 GREENWICH CT
2005-08-29 203-747-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2005-08-29 203-896-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MADISON CT
2005-08-26 203-405-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WOODBURY CT
2005-08-26 203-441-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 WOLCOTT CT
2005-08-19 203-428-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2005-08-19 203-502-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-08-19 203-706-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2005-08-19 203-747-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2005-08-16 203-312-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DANBURY CT
2005-08-16 203-826-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 DANBURY CT
2005-08-15 203-465-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2005-08-12 203-567-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 HUNTINGTON CT
2005-08-11 203-338-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2005-08-11 203-401-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2005-08-10 203-595-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J STAMFORD CT
2005-08-08 203-815-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2005-08-05 203-823-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2005-08-05 203-823-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2005-08-05 203-823-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2005-08-05 203-823-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2005-08-05 203-889-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2005-08-05 203-889-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2005-08-03 203-204-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 GUILFORD CT
2005-08-03 203-204-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 GUILFORD CT
2005-08-03 203-826-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DANBURY CT
2005-07-27 203-428-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2005-07-27 203-463-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SEYMOUR CT
2005-07-25 203-841-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT
2005-07-25 203-841-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT
2005-07-25 203-841-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.