This domain is used to make technical measurements of open internet services.

Traffic from this domain is not an attack. Traffic from this domain will never attempt to log in to your systems.

Spam is not sent from this domain. SPF, DKIM and DMARC records mark this domain as completely unable to send email.

A list of IP addresses authentically using this domain may be found by executing

dig +short

Traffic originating from other IP addresses is likely to be non-authentic.

Photo by Thomas Kelley on Unsplash