If you are worried about being "booted" or having your IP exposed:
The legality of these tools is a gray area, but the of using them is not. While maintaining a database of public IPs is a legal loophole some sites exploit, launching a DDoS attack is a federal crime in many countries (including the U.S. under the Computer Fraud and Abuse Act). Furthermore, using these tools violates the Xbox Code of Conduct, which can lead to permanent console bans. How to Protect Yourself xresolver xbox booter
Appendix — Quick glossary