Dynamic DNS Clients - Software, Specifications and Guidelines

Dynamic IP Updates Made Easy with curl

On your Windows, Mac, or Linux, simply schedule a job to run the following curl command once every few minutes. Curl should be included in the majority of operating systems. Curl has been included in Windows since Windows 10 build 1803, which was released in early May 2018. 
>> 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.
With this command, our system will automatically detect your public IP address and update your hosts to the new IP. Alternatively, you may add parameter -d ip=xx.xx.xx.xx to overwrite the public IP. For multiple hosts, just separate them with a comma. The API Key can be created at your account Dashboard -> Settings
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.

To test how it works on browsers, you can simply paste the following URL adress to a web browser:
Note: You need to replace the API-KEY and hostname with your own api key and hostname

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.


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 The legacy protocols are outdated thought still supported.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

Windows IP Updater 2.0 (runs as windows services)

It runs as Windows service and will start automatically under Services with name DNSExitService
(Right click Start -> Run -> Open:   services.misc)

Download IP Updater 2.0

Note: Windows 10 defender may block the download and install of the software, you should ignore that and turn off the defender before downloading. Certain anti virus may falsely list the software as malware too and you should just ignore that.

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.
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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