CoreDNS — Common Ports
Community software entries: links are references, not individual verification.
Default Ports (1)
Conventional DNS uses port 53 over UDP and TCP. Treating DNS as a UDP-only service can cause incomplete or intermittent resolution.
Kubernetes cluster DNS service port
Scope
Port associations on this page are community-database references (common usage), not a live measurement of any machine; confirm with the official documentation before deployment.
Frequently asked questions
What port does CoreDNS use?
CoreDNS commonly uses these ports: 53. The default port is 53. These are community database references — actual configuration may differ.
How do I check if CoreDNS is running?
Run sudo ss -tlupn 'sport = :53 or sport = :53' on the server to check for listening processes on these ports. Also use systemctl status <service> to check the service state. Without root you may not see other users' processes. A listening port alone does not prove the software identity — verify with the config file and process name.
What category does CoreDNS belong to?
CoreDNS belongs to the DNS Services category. This page lists the software's port associations and their roles.
Quick Info
- Categories
- DNS Services
- Associated ports
- 1
- Aliases
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