INFIP's of domain 'smtp.google.com' We found the following IP/IP's of domain 'smtp.google.com': 142.251.16.26, 142.251.16.27, 172.253.62.27, 64.233.180.26, 64.233.180.27, 2607:f8b0:4004:c17::1a, 2607:f8b0:4004:c17::1b, 2607:f8b0:4004:c21::1a and 2607:f8b0:4004:c21::1b. The search result, will show any matching prefixes.