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whois-api-server on Ubuntu 24.04

Azure Networking

cloudimg packages whois-api-server, the self hosted whois and rdap lookup service, to answer domain, ip and asn queries from first boot.

Base
Hardened build
minimal ports, security patches applied at build time
Access
Unique credentials
generated on first boot, readable only by root
Verified
Boots working
services pass a health gate before release
Support
24/7, 365 days
by email and live chat, 24 hour response SLA

Overview

whois-api-server is an open source WHOIS and RDAP query API. It looks up domains, IPv4 and IPv6 addresses, CIDR prefixes and AS numbers against live WHOIS and RDAP registries, parses the result to structured JSON, and caches it, exposing typed lookup endpoints and a browser lookup page. It suits domain and IP intelligence, registration monitoring, and enriching data pipelines with authoritative registry information.

Why the cloudimg image

cloudimg delivers whois-api-server hardened and fully patched on Ubuntu 24.04 LTS, preconfigured with a self contained lookup web page so a real query returns registry data on first boot. The service runs as a non root user behind a hardened reverse proxy with a strict path allowlist, the application port is fenced to loopback so metrics and admin paths never face the internet, the public lookup path is rate limited to prevent open relay abuse, and 24/7 support is included.

Common uses

  • Domain, IP and ASN registry lookups
  • Domain registration and expiry monitoring
  • Enriching data pipelines with registry data

See it running

Real screenshots taken while testing this image against its deployment guide.

whois-api-server on Ubuntu 24.04 screenshot 1 whois-api-server on Ubuntu 24.04 screenshot 2 whois-api-server on Ubuntu 24.04 screenshot 3 whois-api-server on Ubuntu 24.04 screenshot 4

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