Access your network from anywhere. Easy & Fast. Always.
Dynamic DNS (DynDNS) allows you to associate a domain name or hostname with a dynamic IP address. When your IP changes, the service automatically updates the DNS record so you can continue accessing your services using the same name.
You can use our Dynamic DNS service for free with any domain you manage through thingsdns.com from your customer area.
Don't have your own domain? You can also use a free hostname such as yourname.dyn-adsl.com and keep it automatically updated from your router, server, NAS, or other compatible device.
This allows you to easily access web servers, VPNs, cameras, mail servers, and other services using a stable hostname, even when your Internet provider changes your IP address.


We create script (.sh) to check the IP if it has changed and update record A in the domain.
touch ~/syncDynIP.sh && chmod +x ~/syncDynIP.sh && nano ~/syncDynIP.shWe include the following code in the file:
** Note: replace the text «SECRETKEY» with your API.
#!/bin/sh
# Script: ~/syncDynIP.sh
curl 'https://dyndns.cosasdns.com/sync/SECRETKEY'*/5 * * * * ~/syncDynIP.sh
We create script (.sh) to check the IP if it has changed and update record A in the domain.
touch ~/syncDynIP.sh && chmod +x ~/syncDynIP.sh && nano ~/syncDynIP.shWe include the following code in the file:
** Note: replace the text «SECRETKEY» with your API.
#!/bin/sh
# Script: ~/syncDynIP.sh
curl 'https://dyndns.cosasdns.com/sync/SECRETKEY'*/5 * * * * ~/syncDynIP.sh