What is the least important information when you analyze a public IP address in a security alert?

DNS (Domain Name System) resolution is crucial for identifying hostnames associated with the public IP, which can reveal information about the server's purpose or reputation.

Whois records provide registration details for the public IP address block, including ownership, contact information, and abuse reporting, which is vital for attribution and response.

Geolocation helps determine the physical location of the public IP address, offering geographical context that can be important for threat intelligence and policy enforcement.

ARP (Address Resolution Protocol) is a Layer 2 protocol used to map IP addresses to MAC addresses within a local broadcast domain, making it irrelevant for analyzing a public IP address on the internet.