Why does this URL with excessive preceding dots resolve to an IP address?

Solution 1:

Chrome is interpreting the number 1168951531 as a decimal number, which when represented in hexadecimal is 45ACC8EB. 45ACC8EB in hex is the same as the dotted decimal, when you take each pair of hex digits as one decimal number.

45 -> 69
AC -> 172
C8 -> 200
EB -> 235

Short answer: It's the pure decimal representation of the same IP address.

Solution 2:

This is a long representation of an ipv4 address of the ip Which maps to www.test.com domain.