NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 630
ONVOY, LLC 1
EXIANT 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
2007-07-12 630-666-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-12 630-666-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-12 630-666-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-12 630-666-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-12 630-666-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-12 630-666-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-12 630-666-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-07-11 630-785-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LOMBARD IL
2007-07-10 630-219-3XXX 3000–3999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 NAPERVILLE IL
2007-07-10 630-219-4XXX 4000–4999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 NAPERVILLE IL
2007-07-10 630-219-5XXX 5000–5999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 NAPERVILLE IL
2007-07-10 630-219-6XXX 6000–6999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 NAPERVILLE IL
2007-07-10 630-219-7XXX 7000–7999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 NAPERVILLE IL
2007-07-05 630-246-9XXX 9000–9999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 BARTLETT IL
2007-07-05 630-315-4XXX 4000–4999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 WHEATON IL
2007-07-05 630-403-2XXX 2000–2999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 GLEN ELLYN IL
2007-07-05 630-519-2XXX 2000–2999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 LOMBARD IL
2007-07-05 630-815-0XXX 0000–0999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 W CHICAGO IL
2007-07-03 630-344-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WHEATON IL
2007-07-02 630-219-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2007-07-02 630-219-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2007-07-02 630-797-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ST CHARLES IL
2007-07-02 630-797-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ST CHARLES IL
2007-07-02 630-962-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AURORA IL
2007-07-02 630-962-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AURORA IL
2007-07-02 630-962-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AURORA IL
2007-06-29 630-524-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST CHARLES IL
2007-06-29 630-630-0XXX 0000–0999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-630-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2007-06-29 630-864-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2007-06-29 630-962-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2007-06-27 630-317-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K LOMBARD IL
2007-06-27 630-317-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K LOMBARD IL
2007-06-27 630-552-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PLANO IL
2007-06-26 630-324-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J DOWNERSGRV IL
2007-06-25 630-470-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2007-06-25 630-470-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2007-06-25 630-797-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ST CHARLES IL
2007-06-21 630-877-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 W CHICAGO IL
2007-06-01 630-891-9XXX 9000–9999Assigned ONVOY, LLC 224C HINSDALE IL
2007-05-29 630-888-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2007-05-29 630-888-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AURORA 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.