This module is used to check entered website address wheather it is down or not. To check, please do the following:
step 1: open project and open terminal
step 2: run command "go run . --domain [website-address-want-to-check]".
Ex: If you want to check is Facebook website down or not, run command: "go run . --domain facebook.com"
*Expectation output(if it's still up):
[UP] facebook.com is reachable.
From: [2402:800:6346:15bb:a1e9:4ff4:7943:f8b3]:53102
To: [2a03:2880:f15c:83:face:b00c:0:25de]:80