Here you can look up objects in WHOIS databases at: RIPE , ARIN , LACNIC , APNIC and InterNIC . If the registration authority is not known use a whois client that can intelligently pick a registration authroity for you.

Search other WHOIS Databases

RIPE (Reseaux IP Europeens):
Link to web search form https://apps.db.ripe.net/db-web-ui/#/query
Command to run in a shell:
whois -h whois.ripe.net terminal_query

ARIN (American Registry of Internet Numbers):
Link to web search form https://whois.arin.net/ui/advanced.jsp
Command to run in a shell:
whois -h whois.arin.net terminal_query

AfriNIC (African Network Information Center):
Link to web search form https://afrinic.net/whois
Command to run in a shell:
whois -h whois.afrinic.net terminal_query

APNIC (Asia Pacific Network Information Center):
Link to web search form https://wq.apnic.net/static/search.html
Command to run in a shell:
whois -h whois.apnic.net terminal_query

LACNIC (Latin American and Carribbean Network Information Center):
Link to web search form https://rdap-web.lacnic.net/whois
Command to run in a shell:
whois -h whois.lacnic.net terminal_query

InterNIC:
Link to web search form https://www.internic.net/whois.html
Command to run in a shell:
whois -h whois.internic.net terminal_query

Generic search:
Command to run in a shell:
whois terminal_query 
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