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
2005-04-27 618-772-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-04-20 618-224-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TRENTON IL
2005-04-20 618-227-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BECKEMEYER IL
2005-04-20 618-228-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K AVISTON IL
2005-04-20 618-316-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2005-04-20 618-523-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GERMANTOWN IL
2005-04-20 618-526-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BREESE IL
2005-04-20 618-594-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CARLYLE IL
2005-04-13 618-219-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2005-04-13 618-219-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2005-04-13 618-219-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2005-04-13 618-339-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2005-04-13 618-339-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2005-04-13 618-339-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2005-04-13 618-780-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2005-04-07 618-988-5XXX 5000–5999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HERRIN IL
2005-03-30 618-208-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALTON IL
2005-03-30 618-208-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALTON IL
2005-03-30 618-520-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-30 618-520-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2005-03-29 618-240-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT CARMEL IL
2005-03-16 618-327-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NASHVILLE IL
2005-02-24 618-707-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAWRENCEVL IL
2005-02-24 618-952-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOHNSTONCY IL
2005-02-23 618-204-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MT VERNON IL
2005-02-18 618-307-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EDWARDSVL IL
2005-02-18 618-307-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EDWARDSVL IL
2005-02-18 618-307-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EDWARDSVL IL
2005-02-18 618-447-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-18 618-447-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2005-02-14 618-576-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HARDIN IL
2005-02-14 618-669-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 POCAHONTAS IL
2005-02-14 618-740-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SALEM IL
2005-02-11 618-243-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 OKAWVILLE IL
2005-02-11 618-248-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALBERS IL
2005-02-11 618-328-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DOW 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.