urlscan.io offers public page requests and security analysis for teams inspecting how an unfamiliar link loads.
It records requests and page details when a URL loads.
When inspecting how an unfamiliar link loads, review redirect destinations and third-party hosts.
Censys offers internet asset and certificate lookup for teams checking public assets under an organization's domain.
Shodan offers internet device and service search for teams inventorying the exposure of one's public services.
VirusTotal offers security analysis for files and URLs for teams performing initial checks on a suspicious download link.