IP

curl http://ipinfo.io/4.4.4.4

{
  "ip": "4.4.4.4",
  "city": "Broomfield",
  "region": "Colorado",
  "country": "US",
  "loc": "39.8854,-105.1139",
  "org": "AS3356 Level 3 Parent, LLC",
  "postal": "80021",
  "timezone": "America/Denver",
  "readme": "https://ipinfo.io/missingauth"
}

127.0.0.0
127.0.0.1
127.0.1.1
127.1.1.1
127.127.127.127
0.0.0.0
localhost
::1
ip6-localhost
ip6-loopback

local0.michalszalkowski.com 127.0.0.0
local1.michalszalkowski.com 127.0.0.1
local2.michalszalkowski.com 127.0.1.1
local3.michalszalkowski.com 127.1.1.1
local4.michalszalkowski.com 0.0.0.0
local5.michalszalkowski.com localhost
local6.michalszalkowski.com ::1
local7.michalszalkowski.com ip6-localhost
local8.michalszalkowski.com ip6-loopback
local9.michalszalkowski.com 127.127.127.127

r1.michalszalkowski.com -> r2.michalszalkowski.com -> r3.michalszalkowski.com -> r4.michalszalkowski.com -> r5.michalszalkowski.com -> 127.0.0.1

http://local0.michalszalkowski.com
http://local1.michalszalkowski.com
http://local2.michalszalkowski.com
http://local3.michalszalkowski.com
http://local4.michalszalkowski.com
http://local5.michalszalkowski.com
http://local6.michalszalkowski.com
http://local7.michalszalkowski.com
http://local8.michalszalkowski.com
http://local9.michalszalkowski.com
http://r1.michalszalkowski.com
http://127.0.0.0
http://127.0.0.1
http://127.0.1.1
http://127.1.1.1
http://127.127.127.127
http://0.0.0.0
http://localhost
http://::1
http://ip6-localhost
http://ip6-loopback
http://①②⑦.⓪.⓪.①
http://ⓛⓞⓒⓐⓛⓗⓞⓢⓣ
http://127.0.0.1
http://0.0.0.0
http://localhost
https://127.0.0.1/
https://localhost/
http://[::]
http://0000::1
http://127.127.127.127
http://127.0.1.3
http://127.0.0.0
http://2130706433/
http://3232235521/
http://192.168.0.1
http://3232235777/
http://192.168.1.1
http://2852039166/
http://[::ffff:a9fe:a9fe]
http://[0:0:0:0:0:ffff:a9fe:a9fe]
http://[0:0:0:0:0:ffff:169.254.169.254]
http://169.254.169.254
http://0177.0.0.1/
http://o177.0.0.1/
http://0o177.0.0.1/
http://q177.0.0.1/
http://[0:0:0:0:0:ffff:127.0.0.1]
http://0/
http://127.1
http://127.0.1
http://127.0.0.1/%61dmin
http://127.0.0.1/%2561dmin
http://127.1.1.1:80\@127.2.2.2:80/
http://127.1.1.1:80\@@127.2.2.2:80/
http://127.1.1.1:80:\@@127.2.2.2:80/
http://127.1.1.1:80#\@127.2.2.2:80/
jar:http://127.0.0.1!/
jar:https://127.0.0.1!/