*You know Its not always about the localhost or the 127.0.0.1 or the vcap.me. Sometimes its just about the http://[::1]*

Thats an IPv6 loopback address .

SImilar domains that resolves to localhost: localtest.me, lvh.me, fuf.me, yoogle.com.

These sites have just kept thier A record to 127.0.0.1.

This knowledge can be used while exploiting SSRF to bypass filters.