Networkingflags: g

TCP/UDP Port Number

Match port numbers (1–65535) following a colon, as you'd find in host:port strings.

Try it in RegexPro

Pattern

regexJavaScript
/:(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|[1-5]?\d{1,4})\b/g

Raw source: :(6553[0-5]|655[0-2]\d|65[0-4]\d{2}|6[0-4]\d{3}|[1-5]?\d{1,4})\b

How it works

The alternation enforces the 0–65535 range. Requires a leading colon for context, followed by a word boundary.

Examples

Input

http://localhost:8080

Matches

  • :8080

Input

db.example.com:5432

Matches

  • :5432

Input

api:65535

Matches

  • :65535

Common use cases

  • Extracting ports from connection strings
  • Configuration file validation
  • Firewall rule parsing
  • Service discovery tooling
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