Useful test tools for servers


Service Description
ServerIsDown (this site) This service will try a connection from our server to the server to be tested.
www.intodns.com Test DNS configuration (IntoDNS)
telnet (server-name) 80 Use this command-line to see if the web server is not responding. Example response when server is up:
    telnet serverisdown.com 80
    Trying 144.76.57.21...
    Connected to serverisdown.com.
    Escape character is '^]'.
ping server-name Use this command-line to find the associated server IP and check response time. This only works if 'ping' is enabled.
Example response when ping is enabled and server is working:
    ping www.serverisdown.com
    Pinging www.serverisdown.com [144.76.57.21] with 32 bytes of data:
    Reply from 144.76.57.21: bytes=32 time=244ms TTL=51
    Reply from 144.76.57.21: bytes=32 time=242ms TTL=51
    Reply from 144.76.57.21: bytes=32 time=242ms TTL=51
    ...
Mail Tester
www.mail-tester.com
Test the reputation of your email / IP / message sending service.
IP Blacklist Lookup
https://senderscore.org/blacklistlookup/
Test if your IP is blacklisted.
MX ToolBox
http://mxtoolbox.com/blacklists.aspx
This blacklist test will check a domain or mail server IP address against more than 100 DNS/email blacklists.
Test SSL Certificates Use SSL Checker from SSL Shopper to test https/ssl certificates to find out if the server is secure.

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serverisdown.com - test if a site is down or not