Area code 618

Largest exchanges

• Collinsvl88
• Carbondale33
• Belleville31
• Centralia24
• Granite Cy22
• Olney16
• Alton15
• Marion15
• Mt Vernon14
• E St Louis14

Largest carriers

• Frontier North, Inc. - Il126
• Illinois Bell Tel Co111
• New Cingular Wireless Pcs, LLC - Il95
• Cellco Partnership dba Verizon Wireless - Il62
• Level 3 Communications, LLC - Il46
• T-mobile Usa, Inc.40
• Citizens Telecom Co Illinois-frontier Citizens -il38
• Onvoy, LLC27
• Bandwidth.com Clec, LLC - Il21
• Paetec Itel, LLC14

Most reported 618 numbers

No visitor reports yet in this area code.

FCC complaints

• 618-505-99881 · 2026-10-03
• 618-887-34061 · 2026-10-03
• 618-822-08551 · 2026-10-02