Mailbox Provider: sec.gov [ back to main ] Here's MX record breakdown data for sec.gov. Did you know? Domain sec.gov hosts mail for 1 of the top ten million domains. Here are the top 5000 domains hosted by sec.gov: Rank Domain MX Record MX Domain 1 sec.gov d1-ip01.sec.gov sec.gov This ranking is relative inside of top 10 million results. Find more information about the "top domains" data from host.io. DNS Snapshot date: June 2025 Page generated at: Sat Aug 2 00:19:37 CDT 2025