Common Network Ports List
Search a curated table of common TCP and UDP ports by number, registered service, protocol, category, or practical description.
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How to use
- 1.Enter a port number, service, product, or description in the search field.
- 2.Optionally filter the visible rows by TCP or UDP and by service category.
- 3.Review the matching registration hints and copy the visible rows when you need a tab-separated reference.
About Common Network Ports List
Common Network Ports List is a searchable operational reference for frequently encountered TCP and UDP service ports. Enter a port number, service name, product term, or description, then narrow the table by transport protocol or category. Results update immediately in the browser, and the copy action exports only the visible rows as tab-separated text for tickets, notes, runbooks, or study material. No query or copied result leaves the page.
The table is deliberately curated rather than pretending to reproduce the entire IANA registry. It covers familiar web, mail, file transfer, remote access, directory, database, messaging, printing, container, and core network services. Every row has one numeric port, the selected IANA service name, one or more relevant transport protocols, a short plain-language description, and a category used by the filter. Ports are sorted numerically and unique within this product table.
Search matches the port number, service name, description, and category. A query for 443 returns HTTPS, a query for PostgreSQL returns 5432, and a query for mail can return SMTP, POP3, IMAP, message submission, and their TLS variants. The protocol filter distinguishes TCP from UDP where that distinction is useful. The category filter can isolate databases, web services, network infrastructure, remote access, or another supported group without changing the underlying reference data.
Port numbers do not identify traffic with certainty. A server can listen on an unusual port, several registered names may exist for one number, and a packet using a registered number may belong to a different program. IANA explicitly warns that assignment does not endorse an application and does not prove observed traffic is good. This tool therefore does not label a port safe, recommend firewall access, scan a host, detect listening services, or replace packet inspection and authenticated system inventory.
The transport list also favors common operational use instead of showing every registry row. For example, DNS appears with TCP and UDP, while HTTPS is shown with TCP in this concise table. That choice makes the list readable, but it is not an exhaustive statement about every modern protocol, extension, alternate registration, vendor convention, or deployment. Use the linked IANA registry when you need all assignments, contacts, dates, references, aliases, SCTP or DCCP entries, or the latest change history.
IANA divides the number space into System Ports from 0 through 1023, User Ports from 1024 through 49151, and Dynamic or Private Ports from 49152 through 65535. This list includes common System and User Ports but does not enumerate the dynamic range. A port absent here may still be valid, registered, private, ephemeral, or widely used by convention. Absence means only that it is outside this curated set.
For troubleshooting, use the list to translate a number into a likely service before checking the actual endpoint with platform-native tools, service configuration, logs, and network policy. For firewall work, verify direction, source, destination, protocol, authentication, encryption, business owner, and least-privilege scope. For learning, compare related clear-text and TLS services such as HTTP and HTTPS, IMAP and IMAPS, or LDAP and LDAPS while remembering that encryption depends on the real service configuration.
Reference rows were checked against the current IANA Service Name and Transport Protocol Port Number Registry, and the range and registration context follows RFC 6335. Descriptions are shortened for scanning and do not override the registry wording. The result is a fast local lookup for common cases with explicit limits, stable filters, and a direct path to the authoritative registry when a decision needs exhaustive or time-sensitive evidence.
Methodology & sources
The curated table stores one sorted row per displayed port. Port, selected service name, and protocol were checked against IANA; search is a case-insensitive match over number, service, description, and category.
Frequently asked questions
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