WHOIS Details:

WhoisDog failed to connect to WHOIS server: whois.pnina.ps

Root Zone Database:
https://www.iana.org/domains/root/db/ps.html

Try these WHOIS services:
http://whois.pnina.ps
http://tian.hu/v.ps
http://whois.gd/v.ps
http://who.cx/v.ps
http://whois.domaintools.com/v.ps
https://whois.gandi.net/en/results?search=v.ps
https://www.godaddy.com/whois/results.aspx?checkAvail=1&domain=v.ps&prog_id=GoDaddy
https://www.namecheap.com/domains/whois/results.aspx?domain=v.ps
https://who.is/whois/v.ps/