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Update Sept 30, 2021 2:30 PM PST:
Please understand this is not just an attack on a ULC (underlying carrier), but an attack on the United States Infrastructure and it has visibility at all levels of the federal government.  Also, please know this is affecting large and small customers the likes of which including Microsoft Teams, Google voice, etc... to just name a few.  We have been in the process of moving all traffic away from the affected carrier.  We can confirm the upstream provider has deployed substantial DDoS mitigation technology and the federal authorities are actively engaged in stopping this attack. The upstream carrier is currently observing expected network behavior with successful call completion. We will continue to monitor and provide updates accordingly.
A message from CEO at Bandwidth
https://downdetector.com/status/bandwidth/
https://status.bandwidth.com/
https://twitter.com/voipms
https://status.zoom.us/

Update Sept 30, 2021 7:00 AM PST:
We have been in the process of moving all traffic away from the affected carrier.  We can confirm the upstream provider has deployed substantial DDoS mitigation technology and the federal authorities are actively engaged in stopping this attack. The upstream carrier is currently observing expected network behavior with successful call completion. We will continue to monitor and provide updates accordingly.

Update Sept 29,2021 2:00 PM PST:
We have been in the process of moving all traffic away from the affected carrier.  The upstream carrier has identified the impact to inbound calls from Verizon Wireless has been resolved. They continue to monitor for further service disruptions due to the ongoing potential for attack.  Please click on the links for further details about this issues.

Update Sept 29,2021 7:00 AM PST:
We have been in the process of moving all traffic away from the affected carrier.  This morning the upstream  carrier is still experiencing a DDOS attack that is intermittently affecting calls.  The upstream carrier has cited a potential impact on inbound calls from Verizon Wireless resulting in intermittent inbound call failures.  

IMPORTANT NOTICE Sept 28, 2021 2:00 PM PST:
Currently a large national upstream carrier is experiencing intermittent service disruption due to an DDoS Attack. This outage is causing intermittent inbound and outbound activity for tens of thousands of businesses across the US and even more around the world.  This outage is affecting almost all VoIP telephone providers in the US and also providers such as Microsoft Teams and Zoom.  Customers should be prepared for potential impairments of inbound services within 12-16 hours as potential exists for this DDoS attack to return.  All teams are actively engaged. We apologize for any service interruption that these issues may cause.
For live updates please visit the following sites.
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