NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 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
2008-04-02 773-897-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2008-04-02 773-897-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN02 IL
2008-04-02 773-897-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN02 IL
2008-04-01 773-455-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2008-03-25 773-789-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 773-789-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 773-789-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 773-789-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-24 773-840-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN10 IL
2008-03-11 773-584-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-03-11 773-640-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2008-03-04 773-672-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2008-03-04 773-982-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2008-03-04 773-986-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-986-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-986-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-986-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-986-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-996-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-996-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-996-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-996-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-04 773-996-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-02-27 773-966-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CHICGOZN07 IL
2008-02-21 773-455-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2008-02-01 773-639-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN03 IL
2008-01-17 773-639-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN03 IL
2008-01-09 773-747-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-747-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-747-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-747-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-969-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-969-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-969-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-969-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-09 773-969-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2008-01-04 773-530-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN09 IL
2008-01-04 773-941-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN10 IL
2008-01-04 773-941-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN10 IL
2007-12-18 773-801-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2007-12-17 773-639-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2007-12-14 773-543-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-14 773-543-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-12-12 773-290-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 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.