# dog > DNS lookup utility. > It has colorful output, supports DNS-over-TLS and DNS-over-HTTPS protocols, and can emit JSON. > More information: . - Lookup the IP(s) associated with a hostname (A records): `dog {{example.com}}` - Query the MX records type associated with a given domain name: `dog {{example.com}} MX` - Specify a specific DNS server to query (e.g. Cloudflare): `dog {{example.com}} MX @{{1.1.1.1}}` - Query over TCP rather than UDP: `dog {{example.com}} MX @{{1.1.1.1}} --tcp` - Query the MX records type associated with a given domain name over TCP using explicit arguments: `dog --query {{example.com}} --type MX --nameserver {{1.1.1.1}} --tcp` - Lookup the IP(s) associated with a hostname (A records) using DNS over HTTPS (DoH): `dog {{example.com}} --https @{{https://cloudflare-dns.com/dns-query}}`