For Pro plan user, you can using a branded domain to create short link.
1. Go to "Settings".
2. Under "Branded Domain", copy the IP address.
3. Log into your domain provider to edit the DNS Management setting and add an A record and point it to the IP address found in your Tiny.ie account and set the TTL to 1 Hour.If you own a domain from one of these following, then click the link to get specific instructions for pointing your domain:
4. Once you have saved the record in your DNS Management setting, go back to Tiny.ie and add in your domain url.
5. Click on the "Use Custom Domain" button to save the changes.
6. Now, you can start creating your Short links using your branded domain!