Hello,
We're experiencing intermittent connectivity issues affecting some of our customers in Oman when accessing our Vercel-hosted site.
Symptoms
- Some users in Oman experience high latency or complete connection failures
- The issue is intermittent and only affects a subset of users
- Failures occur during the TLS handshake with 100% packet loss to specific IPs
- Requests from other regions work normally (~300ms TTFB)
Affected Network
- ISP: Awasr Oman
- ASN: AS204170
Diagnostic Results
We ran the Vercel connectivity debug script from an affected customer's machine. The results show inconsistent connectivity to Vercel edge IPs:
Working IPs (responding normally):
- 216.198.79.129
- 216.198.79.193
- 64.29.17.1
- 64.29.17.129
- 64.29.17.193
Failing IPs (TLS handshake timeout, 100% packet loss):
- 216.198.79.1
- 216.198.79.65
- 64.29.17.65
What We've Verified
- DNS configuration is correct (verified with Google DNS, Cloudflare DNS, and local resolver)
- SSL certificate is valid
- No IPv6 (AAAA) records configured
- Issue cannot be reproduced from our own network
x-vercel-cache: HITheaders confirm Vercel is serving content correctly
Conclusion
This appears to be a routing or edge connectivity issue affecting specific Vercel edge IPs from the Awasr Oman (AS204170) network, rather than a DNS or configuration problem on our end.
Has anyone experienced similar issues with connectivity from Oman or other Middle Eastern ISPs? Any suggestions for further diagnostics or workarounds would be appreciated.
Thank you!