What is 91.108.4.0?
91.108.4.0 is an IP address in the Telegram server network (AS62041). The 91.108.0.0/16 range is used by Telegram for its messaging infrastructure, including message routing, media storage, and CDN delivery. Telegram operates data centers in multiple countries and uses this IP range for its backend services.
Privacy note
Telegram IPs appear in connection logs when the Telegram app is active. These are legitimate Telegram service IPs. If a firewall is blocking Telegram, this range is often involved.