NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 618
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
AHOI 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
2017-01-30 618-985-7XXX 7000–7999Assigned METROPCS, INC. 5562 CARTERVL IL
2017-01-27 618-612-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RED BUD IL
2017-01-04 618-961-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENCARBON IL
2016-12-30 618-440-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2016-12-30 618-449-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPARTA IL
2016-12-30 618-701-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HIGHLAND IL
2016-12-27 618-491-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2016-12-27 618-491-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2016-12-27 618-491-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2016-12-15 618-507-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODLAWN IL
2016-12-13 618-389-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ASHLEY IL
2016-12-07 618-899-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2016-11-21 618-746-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2016-10-26 618-607-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K O FALLON IL
2016-10-20 618-714-9XXX 9000–9999Assigned FRONTIER NORTH, INC. - IL 1036 MASCOUTAH IL
2016-10-11 618-247-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SANDOVAL IL
2016-10-11 618-801-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 GRANITE CY IL
2016-09-20 618-825-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELLEVILLE IL
2016-09-07 618-744-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 BELLEVILLE IL
2016-09-02 618-804-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAWRENCEVL IL
2016-08-26 618-716-1XXX 1000–1999Assigned ONVOY, LLC 224C TRENTON IL
2016-08-26 618-716-2XXX 2000–2999Assigned ONVOY, LLC 224C TRENTON IL
2016-08-26 618-801-1XXX 1000–1999Assigned ONVOY, LLC 224C GRANITE CY IL
2016-08-26 618-801-2XXX 2000–2999Assigned ONVOY, LLC 224C GRANITE CY IL
2016-08-26 618-961-1XXX 1000–1999Assigned ONVOY, LLC 224C GLENCARBON IL
2016-08-26 618-961-2XXX 2000–2999Assigned ONVOY, LLC 224C GLENCARBON IL
2016-08-25 618-390-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WOODLAWN IL
2016-08-25 618-804-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 LAWRENCEVL IL
2016-08-23 618-491-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2016-08-22 618-323-2XXX 2000–2999Assigned ONVOY, LLC 224C IUKA IL
2016-08-22 618-323-3XXX 3000–3999Assigned ONVOY, LLC 224C IUKA IL
2016-08-22 618-366-3XXX 3000–3999Assigned ONVOY, LLC 224C KASKASKIA IL
2016-08-22 618-413-4XXX 4000–4999Assigned ONVOY, LLC 224C MARINE IL
2016-08-22 618-413-5XXX 5000–5999Assigned ONVOY, LLC 224C MARINE IL
2016-08-22 618-414-8XXX 8000–8999Assigned ONVOY, LLC 224C TROY IL
2016-08-22 618-414-9XXX 9000–9999Assigned ONVOY, LLC 224C TROY IL
2016-08-22 618-431-5XXX 5000–5999Assigned ONVOY, LLC 224C VANDALIA IL
2016-08-22 618-431-6XXX 6000–6999Assigned ONVOY, LLC 224C VANDALIA IL
2016-08-22 618-464-5XXX 5000–5999Assigned ONVOY, LLC 224C NASHVILLE IL
2016-08-22 618-464-6XXX 6000–6999Assigned ONVOY, LLC 224C NASHVILLE IL
2016-08-22 618-471-5XXX 5000–5999Assigned ONVOY, LLC 224C WOOD RIVER IL
2016-08-22 618-471-6XXX 6000–6999Assigned ONVOY, LLC 224C WOOD RIVER IL
2016-08-22 618-547-2XXX 2000–2999Assigned ONVOY, LLC 224C KINMUNDY IL
2016-08-22 618-547-4XXX 4000–4999Assigned ONVOY, LLC 224C KINMUNDY IL
2016-08-22 618-582-1XXX 1000–1999Assigned ONVOY, LLC 224C NEW ATHENS IL
2016-08-22 618-582-2XXX 2000–2999Assigned ONVOY, LLC 224C NEW ATHENS IL
2016-08-22 618-679-1XXX 1000–1999Assigned ONVOY, LLC 224C MCCLURE IL
2016-08-22 618-679-2XXX 2000–2999Assigned ONVOY, LLC 224C MCCLURE IL
2016-08-22 618-702-5XXX 5000–5999Assigned ONVOY, LLC 224C LEBANON IL
2016-08-22 618-702-6XXX 6000–6999Assigned ONVOY, LLC 224C LEBANON 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.