[Boat]

1. Bulk Whois Lookup Tools
ViewDNS.info Bulk Whois

Website: https://viewdns.info/bulkwhois/
Allows you to perform bulk WHOIS lookups for up to 500 domains at once.
Provides basic information like registrar, creation date, expiry date, etc.
MxToolbox

Website: https://mxtoolbox.com/Whois.aspx
Free WHOIS lookup for domains with bulk querying options via their premium tools.
Free users can query multiple domains manually.
WhoisXML API Bulk Lookup

Website: https://whois.whoisxmlapi.com/
Free for limited bulk queries (with a free trial plan).
Offers WHOIS details for multiple domains via an easy-to-use interface or API.