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Dev Reference: TCP/UDP Port Lookup
x402
Dev Reference: TCP/UDP Port Lookup is a paid API for AI agents from dev-reference.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Returns the IANA service name, common use description, supported protocols, and port range class for any TCP/UDP port number (0–65535)
Price / call$0.02
Success—
StatusUnknown
How this service works
IANA service name and common use for a TCP/UDP port (about 130 well-known ports), plus the port range class.
Output
Returns a structured object including: the port number, IANA-registered service name(s), IANA description, common real-world use, supported protocols (TCP/UDP), port range class (well-known 0–1023, registered 1024–49151, or dynamic/private 49152–65535), whether the port is IANA-assigned, a verdict and reasons, and a flag indicating if official and common use differ. May include a degraded flag and disclaimer if data is partial.
Example use cases
Security audit of open ports
“I'm reviewing our firewall rules and need to know what port 3389 is officially registered as by IANA, what it's commonly used for, and whether it's in the well-known, registered, or dynamic port range.”
Debugging unknown service traffic
“We're seeing unexpected traffic on port 6379 in our logs — can you tell me the IANA service name, what protocol it uses, and what it's typically used for in practice?”
Developer documentation for internal service
“I'm writing docs for our internal platform that runs on port 8080. What's the official IANA assignment and common use for that port, and does it differ from the official description?”
Technical details
Endpoint
GEThttps://dev-reference.x402tookit.com/port-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative IANA port assignments and common-use descriptions for well-known ports (roughly the top 130), including whether official and de-facto usage differ. It is purpose-built for developer reference and security tooling, returning structured metadata with range classification, protocols, and verdict reasoning — making it more useful than a plain text lookup when you need machine-readable output for downstream logic.
Side effects
- Port number out of range (not 0–65535) returns a validation error
- Port not in the ~130 well-known port dataset may return null or sparse fields with degraded=true
- Network timeout or upstream unavailability returns a service error
- Missing required 'port' query parameter returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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