This website checks if the hostname is online (accessible over internet) or not.
Just to add: I keep log of all inputs in the following format. {example}
domain_name, Requester: 192.168.1.101, Time:Tue Jul 18 2017 7:10:23 am UTC, Status Code:Online
You can additionally mention which port number to be scanned for. If it is not mentioned, port 80 will be accessed (by default).
When you input a valid domain / host-name, a socket connecton is initiated from bl4ck to the target and checked if it is a success or otherwise.
Possible Results:
ONLINE
OFFLINE
Valid hostname required!
and a few custom errors for special people.
As of now, no false positives have been seen! Use following format to input hostname.
domain_name.tld or ip or hostname:port or ip:port
For example:
abcd
google.com
www.google.com
aamer.me.pn
www.aamer.me.pn:22
1.2.3.4
2.3.4.5:8080
Some bad examples are:
www.google.com/ (backslash will not be inputted)
http://google.com (protocol should not be given)
google.com/index.html
TOR nodes can be checked from this API. But the feature has been disabled in the online module.