NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

10 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 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
2011-10-18 779-429-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WILMINGTON IL
2011-10-18 779-529-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MANTENO IL
2011-10-12 779-232-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WILMINGTON IL
2011-10-06 779-221-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2011-10-03 779-429-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WILMINGTON IL
2011-10-03 779-999-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E NEWARK IL
2011-09-27 779-225-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2011-09-26 779-220-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRYSTAL LK IL
2011-09-21 779-368-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NEWMILFORD IL
2011-09-21 779-379-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C JOLIET IL
2011-09-19 779-210-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C ROCKFORD IL
2011-09-14 779-500-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2011-09-02 779-500-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2011-08-17 779-233-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-233-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-233-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-233-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-233-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-233-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-233-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-08-17 779-861-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DIXON IL
2011-08-08 779-475-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SO BELOIT IL
2011-08-01 779-220-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CRYSTAL LK IL
2011-07-29 779-236-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2011-07-25 779-233-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-07-20 779-220-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CRYSTAL LK IL
2011-07-19 779-235-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRESCENTCY IL
2011-07-07 779-324-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FRANKFORT IL
2011-07-07 779-324-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FRANKFORT IL
2011-06-07 779-245-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STERLING IL
2011-06-07 779-456-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-06-07 779-771-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ROCKFORD IL
2011-05-27 779-220-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRYSTAL LK IL
2011-05-23 779-324-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FRANKFORT IL
2011-05-23 779-379-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E JOLIET IL
2011-05-23 779-379-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E JOLIET IL
2011-05-12 779-324-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRANKFORT IL
2011-04-08 779-200-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2011-04-08 779-200-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2011-03-16 779-500-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROCKFORD IL
2011-03-04 779-548-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARENGO IL
2011-03-03 779-379-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-03-03 779-875-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2011-02-24 779-545-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MT MORRIS IL
2011-02-18 779-300-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2011-02-18 779-300-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2011-02-18 779-300-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2011-02-18 779-400-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - IL 259E DE KALB IL
2011-02-18 779-400-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - IL 259E DE KALB IL
2011-02-18 779-400-2XXX 2000–2999Assigned YMAX COMMUNICATIONS CORP. - IL 259E DE KALB 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.