this post was submitted on 18 Mar 2026
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You do not need a static IP address or dynamic DNS if your domain registrar provides a REST API. My current registrar is Porkbun and they have a REST API. I simply have a cron job that regularly checks if my public IP[^1] differs from the domain's A-record. If it does, it updates the record to match the public IP address using their API.
[^1]: I use Porkbun's ping endpoint to obtain my public IP. There are also alternatives such as Ipify.
TIL porkbun can do that. Would that help with hosting behind a CGNAT?