NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 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 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
2003-08-29 618-615-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHESTER IL
2003-08-29 618-615-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHESTER IL
2003-08-15 618-497-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PERCY IL
2003-08-14 618-263-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT CARMEL IL
2003-08-14 618-263-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT CARMEL IL
2003-08-04 618-216-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WOOD RIVER IL
2003-08-04 618-307-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EDWARDSVL IL
2003-08-04 618-589-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 O FALLON IL
2003-08-04 618-688-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EDGEMONT IL
2003-08-01 618-969-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION IL
2003-07-07 618-708-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPARTA IL
2003-07-07 618-708-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPARTA IL
2003-07-02 618-319-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARBONDALE IL
2003-07-02 618-319-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARBONDALE IL
2003-07-02 618-319-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARBONDALE IL
2003-06-20 618-690-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 GREENVILLE IL
2003-05-15 618-421-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 ROBINSON IL
2003-05-15 618-442-2XXX 2000–2999Assigned MCC NETWORK SERVICES, LLC 9915 PARKERSBG IL
2003-05-15 618-455-0XXX 0000–0999Assigned MCC NETWORK SERVICES, LLC 9915 WILLOWHILL IL
2003-05-15 618-508-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 FLORA IL
2003-05-15 618-557-7XXX 7000–7999Assigned MCC NETWORK SERVICES, LLC 9915 HARDINVL IL
2003-05-15 618-563-3XXX 3000–3999Assigned MCC NETWORK SERVICES, LLC 9915 HUTSONVL IL
2003-05-15 618-569-6XXX 6000–6999Assigned MCC NETWORK SERVICES, LLC 9915 ANNAPOLIS IL
2003-05-15 618-586-6XXX 6000–6999Assigned MCC NETWORK SERVICES, LLC 9915 PALESTINE IL
2003-05-15 618-676-6XXX 6000–6999Assigned MCC NETWORK SERVICES, LLC 9915 CLAY CITY IL
2003-05-15 618-689-8XXX 8000–8999Assigned MCC NETWORK SERVICES, LLC 9915 SAILOR SPG IL
2003-05-15 618-723-3XXX 3000–3999Assigned MCC NETWORK SERVICES, LLC 9915 NOBLE IL
2003-05-15 618-745-5XXX 5000–5999Assigned MCC NETWORK SERVICES, LLC 9915 MOUNDS IL
2003-05-15 618-752-0XXX 0000–0999Assigned MCC NETWORK SERVICES, LLC 9915 WENDELIN IL
2003-05-15 618-754-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 DUNDAS IL
2003-05-15 618-793-3XXX 3000–3999Assigned MCC NETWORK SERVICES, LLC 9915 ROSE HILL IL
2003-05-15 618-863-3XXX 3000–3999Assigned MCC NETWORK SERVICES, LLC 9915 CALHOUN IL
2003-05-15 618-869-6XXX 6000–6999Assigned MCC NETWORK SERVICES, LLC 9915 CLAREMONT IL
2003-05-15 618-879-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 OLNEY IL
2003-05-15 618-884-4XXX 4000–4999Assigned MCC NETWORK SERVICES, LLC 9915 WESTPORT IL
2003-05-15 618-928-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 BIRDS IL
2003-05-15 618-936-6XXX 6000–6999Assigned MCC NETWORK SERVICES, LLC 9915 SUMNER IL
2003-05-15 618-947-9XXX 9000–9999Assigned MCC NETWORK SERVICES, LLC 9915 CHAUNCEY IL
2003-05-15 618-948-8XXX 8000–8999Assigned MCC NETWORK SERVICES, LLC 9915 STFRNCISVL IL
2003-05-08 618-319-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CARBONDALE IL
2003-04-10 618-421-1XXX 1000–1999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ROBINSON IL
2003-03-03 618-623-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 COLLINSVL IL
2003-02-13 618-262-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MT CARMEL IL
2003-02-13 618-262-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MT CARMEL IL
2003-02-13 618-327-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NASHVILLE IL
2003-02-13 618-383-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARMI IL
2003-02-13 618-383-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARMI IL
2003-02-13 618-508-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLORA IL
2003-02-13 618-508-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLORA IL
2003-02-13 618-516-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAIRFIELD 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.