Support - No-IP Support Center
Dynamic DNS FAQ 
What is a valid hostname?
Hostnames must be no longer than 22 characters in length. You can use a-z,0-9, and '-'. A hostname cannot have any spaces nor can it start with a '-'.
Getting Started?
- We recommend you start with our Getting Started Guide which will walk you through all the basic steps to getting going with our service.
Still Need Help?
- Having trouble finding the answer you are looking for in our online support documents? First try our basic trouble shooting guide. If you still can't find the answer to your question feel free to open a Support Request or Contact Us.
Report Abuse
- If you believe a No-IP member's actions violate our Terms of Service, please inform us immediately at abuse@no-ip.com