Shodan offers internet device and service search for teams inventorying the exposure of one's public services.
It searches internet-facing devices and services.
When inventorying the exposure of one’s public services, check your own IP range for unexpected exposure.
Censys offers internet asset and certificate lookup for teams checking public assets under an organization's domain.
urlscan.io offers public page requests and security analysis for teams inspecting how an unfamiliar link loads.
VirusTotal offers security analysis for files and URLs for teams performing initial checks on a suspicious download link.