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
2008-05-01 203-403-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 RIDGEFIELD CT
2008-04-30 203-626-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WALLINGFD CT
2008-04-17 203-541-4XXX 4000–4999Assigned CABLEVISION LIGHTPATH, INC. - CT 4950 STAMFORD CT
2008-04-16 203-347-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BYRAM CT
2008-04-15 203-267-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WOODBURY CT
2008-04-14 203-712-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 HUNTINGTON CT
2008-04-03 203-660-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - CT 350E BYRAM CT
2008-04-03 203-971-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - CT 350E GREENWICH CT
2008-04-02 203-885-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2008-03-26 203-690-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2008-03-26 203-690-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2008-03-25 203-275-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2008-03-25 203-298-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2008-03-25 203-568-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 WATERBURY CT
2008-03-17 203-507-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2008-03-17 203-507-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2008-03-14 203-402-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J HUNTINGTON CT
2008-03-13 203-275-8XXX 8000–8999Assigned CSC VOICE, LLC 612K BRIDGEPORT CT
2008-03-13 203-388-8XXX 8000–8999Assigned CSC VOICE, LLC 612K STAMFORD CT
2008-03-07 203-974-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2008-02-27 203-309-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 DARIEN CT
2008-02-26 203-632-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NAUGATUCK CT
2008-02-21 203-427-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 MERIDEN CT
2008-02-21 203-893-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2008-02-20 203-992-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 GREENWICH CT
2008-02-20 203-992-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 GREENWICH CT
2008-02-08 203-275-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2008-02-08 203-275-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 BRIDGEPORT CT
2008-02-08 203-751-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2008-02-07 203-275-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRIDGEPORT CT
2008-02-07 203-517-9XXX 9000–9999Assigned CSC VOICE, LLC 612K STAMFORD CT
2008-02-07 203-527-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WATERBURY CT
2008-02-07 203-527-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WATERBURY CT
2008-02-06 203-274-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 STAMFORD CT
2008-02-06 203-295-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NORWALK CT
2008-02-05 203-764-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NEW HAVEN CT
2008-02-01 203-275-4XXX 4000–4999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 BRIDGEPORT CT
2008-01-30 203-275-1XXX 1000–1999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 BRIDGEPORT CT
2008-01-30 203-275-2XXX 2000–2999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 BRIDGEPORT CT
2008-01-30 203-275-3XXX 3000–3999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 BRIDGEPORT CT
2008-01-23 203-286-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 NORWALK CT
2008-01-23 203-998-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 STAMFORD CT
2008-01-21 203-416-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRIDGEPORT CT
2008-01-21 203-742-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 GREENWICH CT
2008-01-15 203-626-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WALLINGFD CT
2008-01-15 203-695-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 WATERBURY CT
2008-01-15 203-752-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2008-01-15 203-752-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2008-01-15 203-752-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2008-01-15 203-974-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 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.