Internet Infrastructure Data

RDAP Client

Look up registration data for any domain, IP address, or ASN. Auto-detects type and routes to the correct registry.

Domains, IPs, and ASNs

gTLD Explorer

Search and filter ICANN's registry of generic top-level domains. Find delegation dates, registry operators, and contract status.

1,500+ gTLDs indexed

ccTLD Explorer

Browse country-code top-level domains by country or territory. Includes IDN variants and legacy TLDs.

300+ ccTLDs indexed

WHOIS Server Lookup

Find the authoritative WHOIS server for TLDs that don't support RDAP. A curated fallback for legacy registries.

70+ WHOIS servers

RDAP DNS Lookup

Discover which RDAP server handles queries for any TLD. Based on IANA's bootstrap registry.

1,400+ TLDs mapped

RDAP IP Lookup

Find which Regional Internet Registry handles RDAP queries for any IPv4 or IPv6 address.

5 RIRs, all IP blocks mapped

RDAP ASN Lookup

Find which RIR handles RDAP queries for any Autonomous System Number.

5 RIRs, all ASN ranges mapped

LGR Explorer

Explore Label Generation Rules for internationalized domain names. Detect homograph attacks and analyze confusable characters.

26 scripts available

Root Zone Explorer

Browse the 13 root servers and all TLD delegations. View DNSSEC adoption, algorithm distribution, and nameserver statistics.

1,400+ TLDs in root zone