Port 53 — DNS
Domain Name System — resolves hostnames like example.com into IP addresses.
| Port number | 53 |
|---|---|
| Service | DNS |
| Transport | TCP/UDP |
| Category | Network |
Is port 53 safe?
Can be abused for amplification attacks and tunneling; monitor unusual volume.
Frequently asked questions
What is port 53 used for?
Port 53 (TCP/UDP) is the standard port for DNS. Domain Name System — resolves hostnames like example.com into IP addresses.
Is port 53 safe to open?
Can be abused for amplification attacks and tunneling; monitor unusual volume.
Is port 53 TCP or UDP?
Port 53 commonly uses TCP/UDP.