Dynamic DNS Clients - Software, Specifications and Guidelines







Update Dynamic DNS in 3 Simple Steps
Keep your hostname pointed to your current IP address by choosing the easiest update method for your setup.
New to Dynamic DNS? Start here: create a free account, add your hostname, then copy your update command or router URL.
Step 1

Create a free account

Create your DNS Exit account so you can manage your hostnames and generate update commands.

Step 2

Add your hostname

After you sign in, add the hostname you want to keep updated, then open the Dynamic IP Update page to generate your command.

Step 3

Use router, client, or script

After setup, use your update URL in a router, DDNS client, or scheduled task.

https://api.dnsexit.com/dns/ud/?apikey=API-Key&host=host.domain.com


Manual API and cURL Updates
If you prefer a command line or custom integration, use the update URL below. DNS Exit will detect your public IP automatically unless you pass the optional ip parameter.
curl https://api.dnsexit.com/dns/ud/?apikey=API-Key -d host=hostname1,hostname2
Note: Simply add the parameter -d ip=xx.xx.xx.xx to override the updated IP(IPv4 or IPv6). Please make sure your update interval is more than 4 minutes.
For multiple hosts, separate the hostnames with commas. The API Key can be created at your account Dashboard -> Settings
To test the update URL in a browser, open:
https://api.dnsexit.com/dns/ud/?apikey=API-Key&host=host.domain.com
Note: You need to replace the API-KEY and hostname with your own api key and hostname
The return is JSON file with a successfull update like:

{"code" : 0, "message" : "Success - some details about the update"}

code:0 indicates successfull updates while code:1 indicates IP address not changed. Other returning codes indicates errors.

curl (short for "Client URL") is a command line tool that can communicates with a web server with a relevant URL. Or in other words, it is just like a text based web browser. The curl command is built in most Operating Systems including Linux, Unix, MacOS, and Windows (sinc Windows 10 ). If your windows does not have curl command, you can refer to install curl on windows to learn how to install it.


DNS API

We provide a fully restful API with direct and powerful access to a vast array of features. Developers can incorporate our API services directly into software and services.     DNS API Document



Legacy Dynamic IP Updates Software and Protocols

Note: It is recommended use the above new curl method to update your IPs. The legacy protocols are outdated thought still supported.
Create a Password just for Dynamic IP Updates

The clients will use your web login/password to update. However, for security concerns, you should create a password just for dynamic DNS updates. To create the IP Update Password:
Login to your account -> Dashboard -> Settings -> IP Update Password

IP Update 1.71 (perl script)
Linux IP Updater (Version 1.70) is our own dynamic DNS update utility for Linux/Unix. ipUpdate-1.70.tar.gz works for all Unlix/Linux platforms.
Download ipUpdate-1.71.tar.gz
To unzip the file, use command:
>> tar xzvf ipUpdate-1.71.tar.gz
Refer to dnsexit/doc/README.txt for instructions.

Tips for the Linux script:
  • Has the option to run as daemon and autostart after reboot. It will automatically insert crontab to start the script at system startup.
  • File /tmp/dnsexit-ip.txt will cache the ip address of the last successful IP update to our system. For next update, if the IP stays the same, the update request won't be sent to our server. You can simply change the IP at dnsexit-ip.txt file to force the update to DNSEXIT.
  • File /var/log/dnsexit.log contains the update history for your IP.
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