alt4.aspmx.l.google.com handles mail for 153,269 domain(s) we track — ordinary email domains.
This host belongs to Google Workspace, which runs 213 mail server(s) in total. The provider page has the full domain list and infrastructure.
Showing 199 of 153,269 recorded domains.
See whether a specific domain is disposable, forwarding or safe — and which mail server it actually uses.
Enter a domain to look up its mail server and trust signals
Checking syntax, MX, SMTP, trust, gateway, and domain profile…
Enter a domain above and click Check to see results.
A mail server's reputation is one signal. The API scores every signup against the whole catalogue — disposable pools, low-trust domains, catch-alls and gateways — as it grows.
What you unlock