NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

3 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 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
2004-10-13 630-366-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K HINSDALE IL
2004-10-13 630-385-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K YORKVILLE IL
2004-10-13 630-387-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K ELBURN IL
2004-10-13 630-397-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K GENEVA IL
2004-10-13 630-433-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K ELMHURST IL
2004-10-13 630-451-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K BENSENVL IL
2004-10-13 630-524-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K ST CHARLES IL
2004-10-13 630-633-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K LEMONT IL
2004-10-13 630-636-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K OSWEGO IL
2004-10-13 630-735-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K ITASCA IL
2004-10-13 630-818-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K W CHICAGO IL
2004-10-13 630-821-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K WARRENVL IL
2004-10-13 630-995-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K NAPERVILLE IL
2004-10-12 630-396-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K LOMBARD IL
2004-10-12 630-598-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K DOWNERSGRV IL
2004-10-12 630-622-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K ROSELLE IL
2004-10-07 630-589-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2004-10-07 630-607-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2004-09-28 630-701-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2004-09-28 630-930-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2004-09-28 630-930-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2004-09-28 630-930-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2004-09-22 630-550-4XXX 4000–4999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 BARTLETT IL
2004-09-20 630-391-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K SUGARGROVE IL
2004-09-16 630-390-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2004-09-16 630-390-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2004-09-16 630-701-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AURORA IL
2004-09-16 630-995-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-09-16 630-995-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-09-13 630-201-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-201-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-201-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-201-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-201-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-201-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-201-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-13 630-995-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-10 630-310-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2004-09-10 630-310-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2004-09-10 630-390-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2004-09-09 630-201-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 NAPERVILLE IL
2004-09-07 630-233-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BARTLETT IL
2004-09-02 630-303-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-09-02 630-303-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-09-02 630-303-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-09-02 630-303-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-09-02 630-303-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2004-08-25 630-995-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NAPERVILLE IL
2004-08-25 630-995-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NAPERVILLE IL
2004-08-24 630-580-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 WHEATON 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.