--- title: "Can I block outbound calls from certain prefixes?" slug: "can-i-block-outbound-calls-from-certain-prefixes" updated: 2026-04-20T14:51:54Z published: 2026-05-21T21:25:40Z canonical: "help.8x8.com/can-i-block-outbound-calls-from-certain-prefixes" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.8x8.com/llms.txt > Use this file to discover all available pages before exploring further. # Can I block outbound calls from certain prefixes? ## Question Can I block outbound calls from certain prefixes? ## Applies To - Outbound Calls - Call Blocking - Admin Console ## Answer For any requests to block outbound calling create a case with 8x8 Technical Support.