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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-04-21 618-572-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLORA IL
2014-04-21 618-681-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTERVL IL
2014-04-21 618-895-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAYNE CITY IL
2014-04-21 618-895-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAYNE CITY IL
2014-04-21 618-919-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAIRFIELD IL
2014-04-21 618-919-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAIRFIELD IL
2014-04-21 618-932-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WFRANKFORT IL
2014-04-21 618-932-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WFRANKFORT IL
2014-04-16 618-508-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FLORA IL
2014-04-14 618-316-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2014-04-07 618-208-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALTON IL
2014-04-07 618-230-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EDGEMONT IL
2014-04-07 618-471-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOOD RIVER IL
2014-04-07 618-655-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EDWARDSVL IL
2014-04-07 618-802-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANITE CY IL
2014-04-07 618-874-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J E ST LOUIS IL
2014-03-28 618-320-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2014-03-27 618-646-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K E ST LOUIS IL
2014-03-25 618-882-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HIGHLAND IL
2014-03-25 618-882-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HIGHLAND IL
2014-03-24 618-468-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ALTON IL
2014-03-10 618-722-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-03-10 618-722-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-03-10 618-722-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-03-10 618-722-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-03-10 618-722-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-03-10 618-722-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-03-10 618-722-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2014-02-25 618-505-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TROY IL
2014-02-06 618-354-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OLNEY IL
2014-02-06 618-572-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FLORA IL
2014-02-06 618-707-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 LAWRENCEVL IL
2014-01-31 618-969-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2014-01-29 618-944-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARION IL
2014-01-22 618-319-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CARBONDALE IL
2014-01-14 618-759-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 VIENNA IL
2013-12-17 618-681-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CARTERVL IL
2013-11-26 618-471-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 WOOD RIVER IL
2013-11-26 618-582-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 NEW ATHENS IL
2013-11-26 618-693-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 BETHALTO IL
2013-11-26 618-844-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CARLYLE IL
2013-11-22 618-434-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CARBONDALE IL
2013-11-22 618-641-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2013-11-22 618-671-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2013-11-22 618-671-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2013-11-21 618-472-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MT VERNON IL
2013-11-19 618-505-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 TROY IL
2013-10-24 618-556-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JERSEYVL IL
2013-10-15 618-477-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2013-10-15 618-816-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C MT VERNON 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.