Before October 10, 2023, you must update your network infrastructure to allowlist the full IP and port ranges:
IP range: 168.86.128.0/18
UDP port range: 10000-60000
If you don’t make this update by this date, calls will experience one-way audio and will eventually be dropped. Old IP and port ranges will not accept or send traffic after October 10, 2023; however, you’ll need to keep them in your infrastructure until that date.
update iptables to include new addresses and ranges after october 10, update iptables to remove old addresses and ranges not included in new ones
https://www.twilio.com/changelog/upcoming-changes-to-twilio-voice-media-ip-addresses
Before October 10, 2023, you must update your network infrastructure to allowlist the full IP and port ranges:
If you don’t make this update by this date, calls will experience one-way audio and will eventually be dropped. Old IP and port ranges will not accept or send traffic after October 10, 2023; however, you’ll need to keep them in your infrastructure until that date.