GRC Port Scan - GRC Internet Security Port Scanner. Tests for open ports on your external IP address.
Webroot Business End - Webroot Business End is an endpoint security service that uses a machine-learning algorithm that identifies and blocks malicious content such as phishing pages, ransomware, and malicious downloads before it can compromise endpoints.
What is my IP? - Find out what your IP is. Do not hesitate to open wimip.
TEQNIX.io - Online Penetration testing tools and automations
whatismyip.cc - External IP Address lookup tool with option to scan the external IP address.
SecApps - Find security vulnerabilities right from your browser.