Outage in Zipwhip

Call Setup Failures for Twilio SIP via Interconnect on US2 Edge

Resolved Minor
September 20, 2025 - Started 5 days ago - Lasted about 3 hours
Official incident page

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Outage Details

Customers connecting to the Twilio SIP edge in us2 using Twilio Interconnect may experience call setup failures. Our engineering teams are actively working to resolve these issues. We expect to provide another update in 30 mins or as soon as more information becomes available.
Latest Updates ( sorted recent to last )
RESOLVED 5 days ago - at 09/20/2025 09:01AM

The issue affecting degraded performance and intermittent call setup failures due to a loss of IP addresses for certain hosts in the US2 region has been resolved and voice services are functioning normally at this time.

MONITORING 5 days ago - at 09/20/2025 08:39AM

We have started seeing recovery for the degraded performance and intermittent call setup failures caused by a loss of IP addresses for certain hosts in the US2 region. We will continue to monitor to ensure a full recovery and expect to provide another update in 30 minutes or as soon as more information becomes available.

INVESTIGATING 5 days ago - at 09/20/2025 07:36AM

We have identified that Programmable Voice calls using the PSTN are affected by an issue related to a loss of IP addresses for certain hosts in the US2 region during a recent maintenance event.

IDENTIFIED 5 days ago - at 09/20/2025 07:19AM

Our engineering teams have identified that the issue is related to a loss of IP addresses for certain hosts in the US2 region during a recent maintenance event. While most traffic is being rerouted and voice services remain available, some customers may still experience degraded performance or intermittent call setup failures. Our engineering teams are actively working to resolve the issues. We expect to provide another update in 1 hour or as soon as more information becomes available.

IDENTIFIED 5 days ago - at 09/20/2025 07:17AM

Our engineering teams have identified that the issue is related to a loss of IP addresses for certain hosts in the US2 region during a recent maintenance event. While most traffic is being rerouted and voice services remain available, some customers may still experience degraded performance or intermittent call setup failures. Our engineering teams are actively working to resolve the issues. We expect to provide another update in 30 mins or as soon as more information becomes available.

INVESTIGATING 5 days ago - at 09/20/2025 06:54AM

Our engineering teams have identified that the issue is related to a loss of IP addresses for certain hosts in the US2 region during a recent maintenance event. While most traffic is being rerouted and voice services remain available, some customers may still experience degraded performance or intermittent call setup failures. Our engineering teams are actively working to resolve the issues. We expect to provide another update in 30 mins or as soon as more information becomes available.

IDENTIFIED 5 days ago - at 09/20/2025 06:48AM

Our engineering teams have identified that the issue is related to a loss of IP addresses for certain hosts in the US2 region during a recent maintenance event. While most traffic is being rerouted and voice services remain available, some customers may still experience degraded performance or intermittent call setup failures. Our engineering teams are actively working to resolve the issues. We expect to provide another update in 30 mins or as soon as more information becomes available.

INVESTIGATING 5 days ago - at 09/20/2025 06:19AM

Customers connecting to the Twilio SIP edge in us2 using Twilio Interconnect may experience call setup failures. Our engineering teams are actively working to resolve these issues. We expect to provide another update in 30 mins or as soon as more information becomes available.

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