Final answer:
The subject of this question is Computers and Technology. The web-based tool that probes IP addresses across the Internet and provides penetration testers with access to that information is called a port scanner.
Step-by-step explanation:
The subject of this question is Computers and Technology. The web-based tool that probes IP addresses across the Internet and provides penetration testers with access to that information is called a port scanner. Port scanners allow security professionals to identify open ports on a system, which can be helpful in identifying potential vulnerabilities.