* whois: use whois.arin.net

+ robust redirect mechanism
* decrease timeout 30sec -> 5sec
* faster response parsing
* don't use likexian/whois-go package

go.mod

@@ -14,8 +14,8 @@ require (
 	github.com/joomcode/errorx v1.0.0
 	github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 // indirect
 	github.com/kardianos/service v0.0.0-20181115005516-4c239ee84e7b
+	github.com/kr/pretty v0.1.0 // indirect
 	github.com/krolaw/dhcp4 v0.0.0-20180925202202-7cead472c414
-	github.com/likexian/whois-go v0.0.0-20190627090909-384b3df3fc49
 	github.com/miekg/dns v1.1.19
 	github.com/sparrc/go-ping v0.0.0-20181106165434-ef3ab45e41b0
 	github.com/stretchr/testify v1.4.0