Can I use your proxies if I have a dynamic IP? Vinora January 09, 2017 11:01 Updated Follow We offer both authentication methods; IP and username/password so you will not have to worry about your IP changing. Please contact support to request username authentication for dynamic IP. Related articles Why do you offer so many IP addresses? How can I get a free test proxy? Do you block access to any specific websites? Comments 0 comments Please sign in to leave a comment.