October 2025 - Outages - Outages Lists

AWS Monday outage AAR
by Jay R. Ashworth 30 Dec '25

30 Dec '25

Thanks to Brad Chapman for catching and excerpting this; please discuss on his thread in -discuss. """ It looks like the "Post-Event Summary" for this outage has been published. I've excerpted the one-sentence root cause analysis (emphasis mine): https://aws.amazon.com/message/101925/ The root cause of this issue was a latent race condition in the DynamoDB DNS management system that resulted in an incorrect empty DNS record for the service’s regional endpoint (dynamodb.us-east-1.amazonaws.com) that the automation failed to repair. """ Cheers, -- jra -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274

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Azure Front Door Outage
by Nick Pron 29 Oct '25

29 Oct '25

Hey gents, It appears that a global Azure Front Door outage is currently occurring. Nick Pron | Sr. Systems Administrator, Infrastructure 1303 Yonge Street, Toronto, ON, M4T 2Y9, Canada

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Report: DNS outage impacts Azure and Microsoft 365 services
by Andy Jabbour 29 Oct '25

29 Oct '25

Tracking? https://www.bleepingcomputer.com/news/microsoft/microsoft-dns-outage-impact… Microsoft is investigating an ongoing DNS outage affecting customers worldwide, preventing them from accessing Microsoft Azure and Microsoft 365 services. According to reports on DownDetector and social networks, this incident began impacting Microsoft's services almost 1 hour ago and is currently causing server and website connection issues for tens of thousands of users. Some of those affected are having issues accessing the Intune and Azure portals, as well as the Exchange admin center, while others report that Microsoft's Azure Front Door Content Delivery Network (CDN) service is also down. - andy Join the GRIP<https://gate15.global/enhancedintelsolutions/>; Gate 15’s Resilience and Intelligence Portal! ANJ | Andy N. Jabbour | Gate 15 | 703.728.5072 | andy(a)gate15.global<mailto:andy@gate15.global> | Leesburg, Virginia Andy on LinkedIn<https://www.linkedin.com/in/andy-jabbour/> | Gate 15 Website<https://gate15.global/> | Gate 15 on Bluesky<https://bsky.app/profile/gate15.bsky.social> | Gate 15 Podcasts<https://gate15.global/podcasts/> [A green and white logo Description automatically generated]

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AWS US-EAST-1
by Josh Purcell 21 Oct '25

21 Oct '25

Dear industry colleagues, There is an ongoing incident impacting services at AWS' US-EAST-1 which has crippled online services. It is related to DynamoDB. This outage is significant. Here in England, the outage has even made headline news. Keep an eye on https://health.aws.amazon.com/health/status for the latest. RIP to those who are impacted 🫡. Best regards, Josh Purcell Me(a)JoshPurcell.com<mailto:Me@JoshPurcell.com>

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Cogent fibercut?
by Budiwijaya 20 Oct '25

20 Oct '25

Does anyone sees cogent packet loss? Half US are having packetloss and most of Europe are bad. Thank you

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Cogent outage in socal region?
by vrode＠outages.org 08 Oct '25

08 Oct '25

Does anyone have any insight and /or pointers regarding cogent high level outage? — regards, /vrode

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AT&T Tandem Switch Outage
by Mike Hammett 06 Oct '25

06 Oct '25

We've discovered that an AT&T tandem switch in Toledo, OH, is overloaded. Calls from an Illinois cell phone to an Illinois number (somehow) get routed through Anaheim, CA, before coming here. Sometimes the calls are sent to the overloaded switch (and thus fail), while at other times they're sent to Chicago (and succeed). My tech spent over an hour on the phone with AT&T, placing test calls while they ran traces to diagnose the issue. Someone is supposed to be running a script to remove Toledo from their routing, but it's unknown how long that will take. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP

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Issues between GTT and AWS?
by Jay Hennigan 03 Oct '25

03 Oct '25

Our customers are having issues reaching some sites on AWS. Traceroute shows huge loss between 72.29.202.154 (GTT, AS3257) and 64.20.32.64(AWS, AS16509). Looking at downdetector.com shows a big spike to multiple destinations just now. We're not a customer of either so nobody for us to yell at. -- Jay Hennigan - jay(a)west.net Network Engineering - CCIE #7880 503 897-8550 - WB6RDV

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Crown Castle Outage
by Michael Scotto 03 Oct '25

03 Oct '25

Anyone experiencing issues with Crown Castle in NY and FL? -- *Michael Scotto* *Manager of Network Engineering* *55 Water Street, New York, NY 10041* -- This email is for informational purposes and is not legal or tax advice. Justworks does not provide legal, tax, or insurance advice. This email may include some stuff that is proprietary and confidential between Justworks and whomever this email is intended for. So please don't share, copy, or distribute this email. If you've received this email and shouldn't have, please let Justworks know and immediately delete the email.

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