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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-02-11 618-370-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MEDORA IL
2005-02-11 618-476-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MILLSTADT IL
2005-02-11 618-566-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MASCOUTAH IL
2005-02-11 618-585-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BUNKERHILL IL
2005-02-11 618-588-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NEW BADEN IL
2005-02-11 618-777-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 STONEFORT IL
2005-02-03 618-384-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARMI IL
2005-01-26 618-216-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WOOD RIVER IL
2005-01-26 618-688-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EDGEMONT IL
2005-01-26 618-918-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CENTRALIA IL
2005-01-18 618-318-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PINCKNEYVL IL
2005-01-17 618-263-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MT CARMEL IL
2005-01-17 618-318-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PINCKNEYVL IL
2005-01-17 618-596-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ZEIGLER IL
2005-01-17 618-625-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SESSER IL
2005-01-17 618-627-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 THOMPSONVL IL
2005-01-17 618-643-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MCLEANSBO IL
2005-01-17 618-724-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHRISTOPHR IL
2005-01-17 618-827-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DONGOLA IL
2005-01-17 618-937-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WFRANKFORT IL
2005-01-17 618-948-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 STFRNCISVL IL
2005-01-17 618-965-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 STEELEVL IL
2005-01-13 618-698-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2005-01-11 618-589-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 O FALLON IL
2005-01-04 618-380-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CARMI IL
2005-01-04 618-421-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROBINSON IL
2005-01-04 618-847-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FAIRFIELD IL
2005-01-03 618-589-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 O FALLON IL
2004-12-29 618-223-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COLLINSVL IL
2004-12-28 618-339-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CENTRALIA IL
2004-12-28 618-623-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 COLLINSVL IL
2004-12-16 618-208-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALTON IL
2004-12-06 618-219-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GRANITE CY IL
2004-12-06 618-262-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MT CARMEL IL
2004-12-06 618-383-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARMI IL
2004-12-06 618-421-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROBINSON IL
2004-12-06 618-445-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBION IL
2004-12-02 618-317-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPARTA IL
2004-12-02 618-317-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPARTA IL
2004-12-02 618-638-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 METROPOLIS IL
2004-12-02 618-694-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2004-12-01 618-207-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BELLEVILLE IL
2004-12-01 618-215-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 E ST LOUIS IL
2004-09-28 618-204-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MT VERNON IL
2004-09-16 618-318-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PINCKNEYVL IL
2004-09-16 618-771-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 VIENNA IL
2004-09-14 618-205-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GLENCARBON IL
2004-09-14 618-208-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ALTON IL
2004-09-14 618-216-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WOOD RIVER IL
2004-09-14 618-219-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRANITE CY 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.