digコマンドを使えば調べられる
- Lookup the IP(s) associated with a hostname (A records): dig +short example.com - Get a detailed answer for a given domain (A records): dig +noall +answer example.com - Query a specific DNS record type associated with a given domain name: dig +short example.com A|MX|TXT|CNAME|NS - Get all types of records for a given domain name: dig example.com ANY - Specify an alternate DNS server to query: dig @8.8.8.8 example.com - Perform a reverse DNS lookup on an IP address (PTR record): dig -x 8.8.8.8 - Find authoritative name servers for the zone and display SOA records: dig +nssearch example.com - Perform iterative queries and display the entire trace path to resolve a domain name: dig +trace example.com
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