Check an IP Address, Domain Name, Subnet, or ASN
23.239.11.131 has a threat confidence score of 31%. This IP address from United States (AS63949, Akamai Connected Cloud) has been observed in 10 honeypot sessions targeting SMTP, HTTPS, SIP, TELNET protocols. First observed on March 27, 2026, most recently active April 21, 2026.
Automated SMTP interaction performing a minimal capability check by issuing EHLO followed by a STARTTLS upgrade request and immediately terminating the session. This pattern is commonly associated with internet-wide scanners, security research crawlers, or opportunistic bots verifying whether an SMTP service supports encrypted communication. The absence of authentication attempts or message submission indicates reconnaissance or service fingerprinting rather than active abuse.