NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 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 773
ONVOY, LLC 1
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
2018-09-20 773-832-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-08-23 773-694-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2018-08-23 773-694-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2018-08-22 773-825-2XXX 2000–2999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN11 IL
2018-08-09 773-516-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN02 IL
2018-07-24 773-798-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2018-07-23 773-337-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN11 IL
2018-06-15 773-394-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-06-15 773-598-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-06-15 773-598-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-06-15 773-782-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-06-15 773-938-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-05-17 773-661-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2018-05-14 773-823-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2018-04-25 773-831-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHICGOZN11 IL
2018-04-13 773-249-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN11 IL
2018-04-05 773-394-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2018-02-28 773-365-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-02-28 773-645-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-02-28 773-645-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-02-28 773-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2018-01-19 773-365-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN04 IL
2017-12-20 773-347-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2017-12-20 773-365-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2017-12-20 773-832-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2017-11-29 773-202-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2017-11-29 773-270-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN04 IL
2017-11-29 773-864-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2017-11-29 773-867-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2017-11-29 773-992-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2017-11-09 773-345-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2017-11-09 773-830-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2017-08-21 773-832-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN04 IL
2017-05-31 773-345-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2017-04-12 773-337-7XXX 7000–7999Assigned TELNYX LLC 073H CHICGOZN11 IL
2017-03-07 773-302-2XXX 2000–2999Assigned TELNYX LLC 073H CHICGOZN02 IL
2016-11-15 773-455-1XXX 1000–1999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN11 IL
2016-11-15 773-948-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN08 IL
2016-09-20 773-455-2XXX 2000–2999Assigned ACCESS ONE, INC. - IL 5447 CHICGOZN11 IL
2016-09-19 773-377-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN11 IL
2016-07-21 773-974-7XXX 7000–7999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN11 IL
2016-07-11 773-536-1XXX 1000–1999Assigned IP HORIZON LLC 515J CHICGOZN07 IL
2016-07-11 773-548-0XXX 0000–0999Assigned IP HORIZON LLC 515J CHICGOZN07 IL
2016-07-11 773-869-0XXX 0000–0999Assigned IP HORIZON LLC 515J CHICGOZN06 IL
2016-07-11 773-998-7XXX 7000–7999Assigned IP HORIZON LLC 515J CHICGOZN10 IL
2016-06-21 773-869-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2016-04-22 773-249-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2016-04-22 773-249-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2016-04-22 773-249-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2016-04-22 773-377-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN11 IL

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.