Netstat

A network status app for Apple iOS — discover which servers and ports are being used on iPhone®, iPad® and iPod touch®. Monitor your device’s TCP connections for uploads and downloads (IPv4 only) and export the list as CSV. Very useful for programmers, developers and curious users! You can use Netstat’s in-app feedback if you have questions or ideas.
!!! IMPORTANT: Apple has blocked Netstat’s functionality as of iOS 10.0 !!!
Features available on iOS 9 and earlier include:
• View connections live.
• View host address and name, port description.
• View connection duration, idle time and round-trip time.
• View bytes received & sent per connection, host and port.
• View connection activity timeline (busy/idle history).
• Hear audio alerts for new and ongoing connections.
• “Delta Mode” shows new activity only.
• Sort connections by your preferred criteria.
• Export list as CSV to iTunes, apps and e-mail.
• Host connectivity test button.
• Export up to 48 hours of connection history.
• Look up IP address WHOIS and port info.
• Identify interfaces as ‘Cellular’, ‘Wi-Fi’, or ‘VPN’.
• Built-in Help.
Some features require in-app purchase.