DNS records for preprints.org

23.44.168.75

23.44.168.89

2a02:26f0:3380:16::5f64:f82b

2a02:26f0:3380:16::5f64:f834

10 mail.mdpi.com

a1-160.akam.net

a26-65.akam.net

a3-64.akam.net

a5-67.akam.net

a6-66.akam.net

a8-66.akam.net

"v=spf1 mx ip4:195.65.194.219 ip4:212.243.204.40 include:spf.mdpi.com -all"