SPF Usage Statistics · Download List of All Websites using SPF
The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.
Domain Not Resolving Usage Statistics · Download List of All Websites using Domain Not Resolving
This domain or subdomain is not resolving to an IP.
Domain Server Failed Usage Statistics · Download List of All Websites using Domain Server Failed
This domain is failing when we are trying to resolve it to an IP address. This could be a DNSSEC issue, a DNS resolver configuration issue with the domain, intentional blocking or lame delegation (non-authoritative DNS for domain).
IPv6 Usage Statistics · Download List of All Websites using IPv6
The website has an IPv6 record.
nginx Usage Statistics · Download List of All Websites using nginx
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Last technology detected on 1st August 2025. We know of 6 technologies on this page and 27 technologies removed from semaphore.net since 11th January 2014. Link to this page.
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