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
2009-08-04 618-578-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-08-04 618-578-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-07-29 618-964-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2009-07-15 618-833-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ANNA IL
2009-07-01 618-564-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BROOKPORT IL
2009-06-24 618-940-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J METROPOLIS IL
2009-06-18 618-823-4XXX 4000–4999Assigned AT&T - LOCAL 7421 GRANITE CY IL
2009-06-11 618-871-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ALLENDALE IL
2009-06-11 618-944-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MARION IL
2009-06-09 618-309-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 METROPOLIS IL
2009-06-09 618-694-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2009-05-21 618-429-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 OLNEY IL
2009-05-20 618-317-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPARTA IL
2009-05-14 618-690-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GREENVILLE IL
2009-05-11 618-381-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-05-11 618-381-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-05-11 618-381-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-05-06 618-823-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2009-05-06 618-823-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2009-04-01 618-663-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2009-03-25 618-917-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2009-03-17 618-205-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J GLENCARBON IL
2009-03-17 618-216-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WOOD RIVER IL
2009-03-17 618-310-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2009-03-17 618-310-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2009-03-11 618-808-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LEBANON IL
2009-03-02 618-476-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MILLSTADT IL
2009-02-25 618-512-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2009-02-17 618-578-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-02-17 618-578-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2009-02-17 618-707-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWRENCEVL IL
2009-02-16 618-857-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 E ST LOUIS IL
2009-02-13 618-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2009-02-13 618-704-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA IL
2009-02-09 618-797-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2009-01-20 618-571-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PINCKNEYVL IL
2009-01-15 618-663-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2008-12-31 618-704-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 VANDALIA IL
2008-12-29 618-310-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2008-12-18 618-434-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CARBONDALE IL
2008-12-18 618-434-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CARBONDALE IL
2008-12-16 618-579-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2008-11-17 618-921-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 METROPOLIS IL
2008-11-11 618-438-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2008-10-09 618-946-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JERSEYVL IL
2008-09-25 618-917-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2008-09-11 618-570-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2008-09-11 618-708-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPARTA IL
2008-09-02 618-416-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BELLEVILLE IL
2008-08-15 618-704-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA 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.