Dynamic DNS Clients - Software, Specifications and Guidelines

Easily Update Dynamic IP Addresses Using cURL

On Windows, Mac, or Linux, schedule a task to execute the following curl command at regular intervals. cURL, which stands for client URL, is a command line tool that developers use to transfer data to and from a server. Curl is typically included in most operating systems. It has been a part of Windows since the release of Windows 10 build 1803 in early May 2018. If the command is not present on your machine, you'll need to install it.
>> 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.
Using this command, our system will automatically identify your public IP address and update your hosts to the new IP. Alternatively, you can include the parameter -d ip=xx.xx.xx.xx to overwrite the public IP. For multiple hosts, simply 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 make your work easier, you may simply click on the following button to start your automatic updates to your IP

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 The legacy protocols are outdated thought still supported.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

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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