Several of our AWS-hosted websites sit behind Cloudflare, but customers using Telstra appear to be reaching them through Cloudflare locations in Singapore instead of Australia. We're trying to determine whether this is a Cloudflare routing or peering issue, a Telstra problem, or something related to a wider network outage. Has anyone else noticed similar behavior?
4 Answers
Our mobile devices all use Telstra and our Azure sites are also behind Cloudflare, but we haven’t noticed any routing problems or unusual errors recently. It may be limited to certain destinations or Cloudflare points of presence.
There may also have been a regional connectivity problem involving damage to a subsea cable serving Southeast Asia. That could explain why some traffic was being diverted through Singapore, although it wouldn’t necessarily affect every Telstra customer or destination.
Check which Cloudflare plan the affected domains are using. Historically, Telstra peering and traffic steering could differ between the free, Pro, and higher-tier plans, so some traffic may be sent through Singapore depending on the arrangement.
We have a mix of Pro and free domains. We saw several thousand Cloudflare 5xx errors, but only when requests were being handled through Singapore IPs. The problem stopped around 5 PM, so it may have been a temporary routing event rather than a permanent configuration issue.
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