Avast Online Security does not flag this site as bad.

[polonus]

See: http://killmalware.com/ninjacondom.com/
When you should go there Google Safebrowsing stops you in your tracks.
VT two detections: https://www.virustotal.com/nl/url/36834aca2dc07c7a2cd7542221eb923425c4ddccf5bc00064b59e0ae6b6b94d3/analysis/1425585549/
Unable to properly scan your site. Unable to connect.
Invalid URL or failed to lookup IP. But avast gives it as all green: Connection error
11004 [11004] Valid name, no data record (check DNS setup) - wXw.ninjacondom.com,,,Not in namespace,

Domain Status   Deleted And Available Again
Whois History   57 records have been archived since 2009-06-05    
IP History   17 changes on 14 unique IP addresses over 6 years    
Registrar History   3 registrars with 1 drop    
Hosting History   12 changes on 9 unique name servers over 6 years    
Whois Server   whois.verisign-grs.com
 Website
Website Title   None given.    
Whois Record ( last updated on 2015-03-05 )
 
Whois Record Not Available
This domain is not registered.
Listed here: http://www.justdropped.com/drops/080913com.html
So open to be abused!

polonus

[Pondus]

http://www.downforeveryoneorjustme.com/http://www.ninjacondom.com/

[polonus]

But why when it is down Google Safebrowsing still blocks and Avast Online Security gives it as safe?

polonus