NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 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 779
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6
8X8, INC. 2
INTRADO COMMUNICATIONS, LLC 1
BANDWIDTH.COM CLEC, LLC - IL 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
2022-03-22 779-278-4XXX 4000–4999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F GRANDRIDGE IL
2022-03-02 779-252-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J PLAINFIELD IL
2022-02-25 779-351-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2022-02-23 779-338-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CRESCENTCY IL
2022-02-23 779-625-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J WOODSTOCK IL
2022-02-18 779-342-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J DWIGHT IL
2022-02-18 779-775-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2022-02-18 779-775-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2022-02-18 779-775-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2022-02-18 779-775-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2022-02-18 779-775-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2022-02-17 779-264-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 KANKAKEE IL
2022-02-14 779-739-7XXX 7000–7999Assigned TWILIO INTERNATIONAL, INC. 506J FORREST IL
2022-02-11 779-250-1XXX 1000–1999Assigned METROPCS, INC. 5562 STERLING IL
2022-02-11 779-250-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 STERLING IL
2022-02-11 779-499-1XXX 1000–1999Assigned METROPCS, INC. 5562 FREEPORT IL
2022-02-10 779-265-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MCHENRY IL
2022-02-03 779-341-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 JOLIET IL
2022-02-01 779-895-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J ROCKFORD IL
2022-01-31 779-347-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WINSLOW IL
2022-01-31 779-729-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LENA IL
2022-01-28 779-352-3XXX 3000–3999Assigned ONVOY, LLC 224C WATERMAN IL
2022-01-26 779-338-1XXX 1000–1999Assigned COMMIO, LLC 939H CRESCENTCY IL
2022-01-26 779-466-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J EMINGTON IL
2022-01-24 779-247-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2022-01-24 779-879-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STREATOR IL
2022-01-18 779-978-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SANDWICH IL
2022-01-13 779-338-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRESCENTCY IL
2022-01-13 779-426-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J MANHATTAN IL
2022-01-13 779-624-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J MOMENCE IL
2022-01-13 779-639-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J MCHENRY IL
2022-01-13 779-675-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J OHIO IL
2022-01-13 779-746-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CISSNAPARK IL
2022-01-13 779-783-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J STOCKLAND IL
2022-01-13 779-832-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CEDARPOINT IL
2022-01-13 779-927-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J MARENGO IL
2022-01-13 779-997-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J PLATTVILLE IL
2022-01-12 779-284-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SHELDON IL
2022-01-11 779-349-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRING VLY IL
2022-01-11 779-349-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPRING VLY IL
2022-01-11 779-349-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPRING VLY IL
2022-01-09 779-238-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2022-01-09 779-280-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E DONOVAN IL
2022-01-09 779-282-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MARTINTON IL
2022-01-09 779-294-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HARDING IL
2022-01-09 779-335-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2022-01-09 779-335-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2022-01-09 779-335-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2022-01-09 779-335-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2022-01-08 779-290-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MILFORD IL

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.