this is second time, my site stop working without any reason.
I found it's probably because of DNS and i changed ip address. it was ok for afew days and site went down again now! when i ping with "host-tracker" to website, from some countries it show me this ip: 220.127.116.11
18.104.22.168 is OpenDNS "Not Available" redirector. Since a few of the companies listed on Host Tracker use OpenDNS for DNS, it will resolve to that IP versus the site's since the DNS lookup is failing through OpenDNS.
IP + HOSTNAME INFORMATION
IP: 22.214.171.124 Hostname:hit-servfail.opendns.com
Active Servers: http/80 https/443 LOCATION
City: San Francisco, CA
Metropolis: San Francisco, CA
Country: United States (US) OWNERSHIP
ASN / ISP: AS36692, OpenDNS, LLC
ISP: OpenDNS, LLC
Organization: OpenDNS, LLC WEB SERVER INFORMATION
Software: OpenDNS Guide Server