Perform a reverse DNS (PTR) lookup for an IPv4 address. A PTR record maps an IP address to a hostname using the in-addr.arpa domain. This lookup reveals the domain name associated with an IPv4 address and is commonly used for verification, logging, mail server checks, and network diagnostics.
Use !ptr-ip to retrieve the reverse DNS hostname for an IPv4 address. This command focuses on DNS PTR resolution. For IPv4 address analysis use !ip4; for IPv4 CIDR block analysis use !cidr4; for IPv4 WHOIS registration data use !whois-ip4; for BGP routing visibility use !bgp-cidr4.