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
2004-06-30 203-816-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 TRUMBULL CT
2004-06-25 203-280-3XXX 3000–3999Assigned METROPCS, INC. 5562 DARIEN CT
2004-06-25 203-404-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NEW HAVEN CT
2004-06-24 203-808-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2004-06-17 203-508-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2004-06-17 203-508-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2004-06-15 203-400-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRUMBULL CT
2004-06-10 203-942-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DANBURY CT
2004-06-09 203-808-7XXX 7000–7999Assigned METROPCS, INC. 5562 WATERBURY CT
2004-06-09 203-868-6XXX 6000–6999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2004-05-28 203-409-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J OLDGRNWICH CT
2004-05-26 203-673-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2004-05-24 203-742-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 GREENWICH CT
2004-05-21 203-312-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J DANBURY CT
2004-05-21 203-868-5XXX 5000–5999Assigned METROPCS, INC. 5562 NEW HAVEN CT
2004-05-21 203-907-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2004-05-21 203-927-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2004-05-19 203-508-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2004-05-18 203-244-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 RIDGEFIELD CT
2004-05-18 203-713-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MILFORD CT
2004-05-11 203-416-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BRIDGEPORT CT
2004-05-11 203-644-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NORWALK CT
2004-05-11 203-712-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J HUNTINGTON CT
2004-05-11 203-718-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CHESHIRE CT
2004-04-28 203-747-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2004-04-28 203-747-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW HAVEN CT
2004-04-16 203-706-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT
2004-04-16 203-927-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2004-04-16 203-927-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2004-04-07 203-400-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRUMBULL CT
2004-04-07 203-400-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TRUMBULL CT
2004-04-07 203-742-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 GREENWICH CT
2004-04-05 203-947-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DANBURY CT
2004-04-05 203-954-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2004-04-01 203-347-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BYRAM CT
2004-03-26 203-280-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 DARIEN CT
2004-03-26 203-280-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 DARIEN CT
2004-03-26 203-280-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 DARIEN CT
2004-03-26 203-280-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 DARIEN CT
2004-03-26 203-280-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 DARIEN CT
2004-03-23 203-490-8XXX 8000–8999Assigned METROPCS, INC. 5562 NAUGATUCK CT
2004-03-23 203-808-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2004-03-22 203-364-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NEWTOWN CT
2004-03-22 203-529-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 WILTON CT
2004-03-22 203-564-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAMFORD CT
2004-03-21 203-533-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 GUILFORD CT
2004-03-15 203-504-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2004-03-11 203-923-4XXX 4000–4999Assigned METROPCS, INC. 5562 BRIDGEPORT CT
2004-03-09 203-920-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NEW CANAAN CT
2004-03-04 203-252-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD 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.