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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-06-08 203-707-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT
2011-06-07 203-609-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAMFORD CT
2011-06-07 203-609-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAMFORD CT
2011-06-07 203-609-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAMFORD CT
2011-06-07 203-703-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAMFORD CT
2011-06-06 203-402-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUNTINGTON CT
2011-06-06 203-794-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2011-05-26 203-677-4XXX 4000–4999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 WALLINGFD CT
2011-05-26 203-677-8XXX 8000–8999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 WALLINGFD CT
2011-05-26 203-677-9XXX 9000–9999Assigned SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 9147 WALLINGFD CT
2011-05-26 203-693-3XXX 3000–3999Assigned CSC VOICE, LLC 612K MILFORD CT
2011-05-26 203-864-7XXX 7000–7999Assigned METROPCS, INC. 5562 BRIDGEPORT CT
2011-05-26 203-864-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRIDGEPORT CT
2011-05-25 203-489-3XXX 3000–3999Assigned CSC VOICE, LLC 612K GREENWICH CT
2011-05-25 203-595-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 STAMFORD CT
2011-05-25 203-810-5XXX 5000–5999Assigned CABLEVISION LIGHTPATH, INC. - CT 4950 NORWALK CT
2011-05-25 203-957-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NORWALK CT
2011-05-24 203-659-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F FAIRFIELD CT
2011-05-24 203-920-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEW CANAAN CT
2011-05-23 203-707-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WATERBURY CT
2011-05-19 203-997-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2011-05-13 203-892-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2011-05-09 203-707-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 WATERBURY CT
2011-05-09 203-818-3XXX 3000–3999Assigned METROPCS, INC. 5562 NORWALK CT
2011-05-09 203-818-5XXX 5000–5999Assigned METROPCS, INC. 5562 NORWALK CT
2011-05-09 203-939-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWALK CT
2011-05-05 203-779-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 MADISON CT
2011-05-04 203-301-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F MILFORD CT
2011-05-04 203-443-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F MERIDEN CT
2011-05-04 203-493-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F GEORGETOWN CT
2011-05-04 203-646-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRANFORD CT
2011-05-04 203-646-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRANFORD CT
2011-05-04 203-707-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F WATERBURY CT
2011-05-04 203-707-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F WATERBURY CT
2011-05-04 203-892-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F ANSONIDRBY CT
2011-04-27 203-299-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NORWALK CT
2011-04-27 203-307-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F FAIRFIELD CT
2011-04-27 203-349-7XXX 7000–7999Assigned CABLEVISION LIGHTPATH, INC. - CT 4950 WESTPORT CT
2011-04-27 203-491-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEWTOWN CT
2011-04-27 203-538-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F HUNTINGTON CT
2011-04-27 203-590-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F TRUMBULL CT
2011-04-27 203-614-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F STAMFORD CT
2011-04-27 203-653-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F STAMFORD CT
2011-04-27 203-674-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F STAMFORD CT
2011-04-27 203-677-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F WALLINGFD CT
2011-04-27 203-714-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NAUGATUCK CT
2011-04-27 203-718-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F CHESHIRE CT
2011-04-27 203-800-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEW HAVEN CT
2011-04-27 203-800-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NEW HAVEN CT
2011-04-27 203-800-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F 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.