Port Number Lookup
Look up common TCP and UDP port numbers and their associated services. Search by port number or service name. Includes well-known and registered ports.
Used 53.3K times today
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP | File Transfer Protocol (data) |
| 21 | TCP | FTP | File Transfer Protocol (control) |
| 22 | TCP | SSH | Secure Shell — remote login |
| 23 | TCP | Telnet | Telnet remote login (insecure) |
| 25 | TCP | SMTP | Simple Mail Transfer Protocol |
| 53 | TCP/UDP | DNS | Domain Name System |
| 67 | UDP | DHCP | Dynamic Host Configuration (server) |
| 68 | UDP | DHCP | Dynamic Host Configuration (client) |
| 80 | TCP | HTTP | HyperText Transfer Protocol (web) |
| 110 | TCP | POP3 | Post Office Protocol 3 (email) |
| 123 | UDP | NTP | Network Time Protocol |
| 143 | TCP | IMAP | Internet Message Access Protocol |
| 161 | UDP | SNMP | Simple Network Management Protocol |
| 194 | TCP | IRC | Internet Relay Chat |
| 389 | TCP | LDAP | Lightweight Directory Access Protocol |
| 443 | TCP | HTTPS | HTTP Secure (SSL/TLS) |
| 445 | TCP | SMB | Server Message Block (Windows file sharing) |
| 465 | TCP | SMTPS | SMTP over SSL |
| 587 | TCP | SMTP | SMTP (mail submission) |
| 636 | TCP | LDAPS | LDAP over SSL |
| 993 | TCP | IMAPS | IMAP over SSL |
| 995 | TCP | POP3S | POP3 over SSL |
| 1194 | UDP | OpenVPN | OpenVPN |
| 1433 | TCP | MSSQL | Microsoft SQL Server |
| 1723 | TCP | PPTP | Point-to-Point Tunneling Protocol |
| 3306 | TCP | MySQL | MySQL database |
| 3389 | TCP | RDP | Remote Desktop Protocol (Windows) |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5900 | TCP | VNC | Virtual Network Computing |
| 6379 | TCP | Redis | Redis in-memory database |
| 6881 | TCP | BitTorrent | BitTorrent file sharing |
| 8080 | TCP | HTTP Alt | HTTP alternative port (proxies/dev) |
| 8443 | TCP | HTTPS Alt | HTTPS alternative port |
| 9200 | TCP | Elasticsearch | Elasticsearch REST API |
| 27017 | TCP | MongoDB | MongoDB database |
How to Use Port Number Lookup
- 1
Search by port number
Type a port number (e.g. 443) to see which service uses it.
- 2
Search by service name
Type a service name (e.g. "ssh" or "http") to find its default port.
- 3
Browse the list
Scroll through the full list of well-known ports (0–1023) and registered ports (1024–49151).
Frequently Asked Questions
What are well-known ports?
Is this TCP or UDP?
Embed This Tool
Add this tool to your website for free. Just copy and paste the code below:
<iframe src="https://utilko.com/embed/port-number-lookup/" width="100%" height="500" frameborder="0" title="Port Number Lookup"></iframe> About Port Number Lookup
The Port Number Lookup tool on Utilko lets you search TCP and UDP port numbers and their associated services. Quickly look up ports like 80 (HTTP), 443 (HTTPS), 22 (SSH), 3306 (MySQL), and hundreds more from the IANA registry.
More Category Tools
Random MAC Address Generator
Generate random MAC addresses in colon, dash, or dot-separated format. Bulk generate up to 100 at a time. Fully random and locally generated.
Htpasswd Generator
Generate Apache .htpasswd password hashes online. Enter username and password to produce an MD5 or bcrypt htpasswd hash for basic HTTP authentication.
CSP Header Generator
Visually build a Content-Security-Policy HTTP header. Enable directives like script-src, style-src, and img-src with checkboxes. Copy the generated header string.
SSL Certificate Decoder
Paste a PEM SSL certificate and decode it to see subject, issuer, validity dates, Subject Alternative Names, and key type. Client-side decoding.
JWT Generator
Generate JSON Web Tokens for testing. Select algorithm (HS256, HS384, HS512), add payload claims, enter a test secret, and get a signed JWT. Not for production use.
WiFi Password Generator
Generate strong, secure WiFi passwords. Choose length, include numbers, symbols, and avoid ambiguous characters. Create WPA2-compatible passwords instantly.
IP Subnet Calculator
Calculate subnet information from IP address and CIDR notation. Get network address, broadcast address, usable host range, and total host count instantly.
MAC Address Lookup
Look up the manufacturer/vendor of any MAC address or OUI prefix. Enter a MAC address to identify the network adapter vendor from the IEEE OUI database.