Port 995 — POP3S
Quick reference for TCP/UDP port 995, used by POP3S. Includes what the service does, security guidance and related ports.
What is port 995?
POP3 over TLS.
What port does POP3S use?
POP3S listens on port 995 by default.
Is port 995 open? How to check
Run one of these from your computer, replacing HOST with the IP address or domain you want to test.
nc -zv HOST 995
Test-NetConnection HOST -Port 995
nmap -p 995 HOST
A refused or timed-out connection means the port is closed or filtered by a firewall.
Security guidance
Low risk — designed for public exposure
Port 995 (POP3S) is designed for public exposure. Standard hardening (TLS certs, current firmware, sensible rate limits) is enough — no special isolation needed.
Related ports
Frequently asked
What is port 995 used for?+
Port 995 is the standard TCP/UDP port for POP3S. POP3 over TLS.
What port does POP3S use?+
POP3S listens on port 995 by default.
Your IP Address Is Exposed Right Now
Every website you visit can see your real IP address and location. NordVPN encrypts your traffic and hides your identity with military-grade encryption. Stay anonymous online.