Clark, a professional hacker, was hired by an organization lo gather sensitive Information about its competitors surreptitiously. Clark gathers the server IP address of the target organization using W

AOL is a consumer web portal and search engine with no functionality for querying IP address ownership or network range information.

ARIN is a Regional Internet Registry (RIR) that maintains a public WHOIS database allowing anyone to query an IP address and retrieve details such as the assigned network range (CIDR block), the organization that owns it, and related network topology information. Entering a target server IP into ARIN's WHOIS tool directly returns the network range and registration data. This makes it a primary footprinting resource during the reconnaissance phase of ethical hacking.

DuckDuckGo is a general-purpose privacy-focused search engine and does not provide structured IP registration or network range lookups.

Baidu is a Chinese general web search engine and does not serve as a registry or provide authoritative network range data for IP addresses.