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Lookproof IP Address Info
x402
Lookproof IP Address Info is a paid API for AI agents from api.lookproof.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Classifies an IPv4 or IPv6 address against IANA special-purpose registries, returning its category, RFC reference, compressed/expanded forms, reverse DNS name, and IPv4-mapped form — all computed offline.
Price / call$0.002
Success—
StatusUnknown
How this service works
Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.
Output
Returns the IANA special-purpose classification (e.g. private, loopback, link-local, shared, documentation, 6to4, Teredo, NAT64, public), the governing RFC, compressed and expanded representations of the address, the reverse DNS (PTR) name, and — for IPv4-mapped IPv6 addresses — the underlying IPv4 address. All computed locally without external DNS queries.
Example use cases
Firewall rule public-IP validation
“Before I add this IP to our allowlist, can you check whether 100.64.0.5 is actually a public internet address or falls into some special IANA range like shared address space?”
IPv6 address type identification
“I've got the IPv6 address 2001:0000:4136:e378:8000:63bf:3fff:fdd2 — can you tell me if it's a Teredo address, expand it to full form, and give me its reverse DNS name?”
Log analysis IP classification
“I'm reviewing server logs and keep seeing requests from 169.254.169.254 — can you classify that IP and tell me what special-purpose category it belongs to and which RFC defines it?”
Technical details
Endpoint
GEThttps://api.lookproof.dev/v1/ip/info?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, offline classification of an IP address against IANA special-purpose registries without making live DNS or WHOIS queries. Ideal for security pipelines, log enrichment, and firewall validation where latency and privacy matter. Prefer it over WHOIS or geolocation APIs when the goal is to determine if an address is routable on the public internet rather than finding ownership or geography.
Side effects
- Invalid or malformed IP string returns a 4xx error
- IP string exceeding 64 characters is rejected by schema validation
- Empty or missing 'ip' query parameter returns a validation error
- Very unusual or future IANA allocations may not yet be covered
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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