Vercel custom domain resolves to 4 unreachable Anycast IPs while 4 other Vercel IPs work

My custom domain aymwvn.me is configured on Vercel and shows:

Valid Configuration
Production
SSL valid

The .vercel.app deployment also works.

I am having a connectivity problem specifically with the Vercel Anycast IPs returned by DNS.

Current DNS:

aymwvn.me → 216.198.79.65
aymwvn.me → 216.198.79.1

Both IPs time out on TCP/443.

I ran Vercel’s official connectivity debug script, which tested all IPs associated with my domain.

Results:

216.198.79.1 → TCP timeout / 100% packet loss
216.198.79.65 → TCP timeout / 100% packet loss

216.198.79.129 → HTTP 200 OK / ping works
216.198.79.193 → HTTP 200 OK / ping works

64.29.17.1 → TCP timeout / 100% packet loss
64.29.17.65 → TCP timeout / 100% packet loss

64.29.17.129 → HTTP 200 OK / ping works
64.29.17.193 → HTTP 200 OK / ping works

The successful responses contain:

Server: Vercel
HTTP/1.1 200 OK
Host: aymwvn.me

I also confirmed the DNS response using Google’s public resolver:

nslookup aymwvn.me 8.8.8.8

216.198.79.65
216.198.79.1

The issue occurs on both my home Internet connection and a separate mobile-data connection.

Therefore:

  • The Vercel deployment works.
  • The custom domain is configured as Valid Configuration.
  • SSL works.
  • DNS resolves successfully.
  • Four Vercel Anycast IPs work.
  • Four other Vercel Anycast IPs consistently timeout.
  • The IPs returned by normal DNS are currently the unreachable ones.

This appears to be an issue with the Vercel Anycast edge IP assignment/routing for my domain rather than my application or DNS configuration.

Could a Vercel engineer investigate why aymwvn.me is currently being returned to clients with the unreachable Anycast addresses 216.198.79.1 and 216.198.79.65?

I can provide the full vercel-debug.txt if needed.