Deep Whois

Comprehensive Whois Lookup:
for Any Domain, IP Address,
RDAP, and ENS

What is Whois?

Whois started as a simple service providing access to domain name data and ownership information.

However, as the internet evolved with the introduction of new top-level domains (TLDs), internationalized domain names (IDNs), and additional protocols like RDAP, the landscape has become more complex.

Despite these changes, the core function of Whois remains the same: to provide ownership and other critical data about domain names, IP addresses, networks, and autonomous systems.

Why Deep Whois?

With the growing complexity of public data about domains, IPs, and networks, Deep Whois simplifies the process by consolidating everything into a single, easy-to-use platform. No need to worry about where to find Whois information for a particular domain or IP; Deep Whois does the heavy lifting, providing seamless access to the data you need.

Effortless Whois Lookup in 2024 →

The year 2024 marks significant changes in Whois, including the transition to RDAP. Currently, 1% of TLDs are only accessible via RDAP, 0.5% via private interfaces, and an additional layer of information is now available through Ethereum Name Service (ENS) smart contracts. Traditional Whois still covers 90% of TLDs.

Deep Whois ensures effortless lookup for all domain names, IP addresses, networks, and autonomous systems by automatically selecting the authoritative source of Whois information. It draws from a human-verified database of Whois and RDAP servers, and even from the Ethereum blockchain, all within a single interface — features that aren't available in the stock Whois utility.

Top-level Domains (TLD) and Second-Level Domains (SLD)

As of 2024, Deep Whois supports Whois for approximately 1,500 TLDs and around 9,000 total zones, including SLDs. About half of these have verified Whois data, whether through traditional Whois, RDAP, or blockchain.

Private Whois Servers

Deep Whois has access to Whois data for about 130 domain zones that are only available through custom Whois servers or private interfaces/APIs. This accounts for over 1% of all verified domain zones.

Internationalized Domain Names (IDN)

Deep Whois has supported IDNs from their inception, allowing users to query domains using international symbols seamlessly across all its features.

IP Addresses, IP Networks, and Autonomous Systems

Deep Whois is equipped to look up data for all IP addresses (both IPv4 and IPv6), IP networks, and autonomous systems from sources such as ARIN, RIPE, APNIC, LACNIC, AFRINIC, IANA, and more.

Referral Whois (RWhois)

Deep Whois accesses over 1,200 Whois servers to retrieve authentic information for most domains, continuing the traditional Whois methodology.

Registration Data Access Protocol (RDAP)

As RDAP increasingly replaces Whois, Deep Whois supports RDAP out of the box. Users can query RDAP-only domains just as easily as traditional Whois domains, with no need to know which TLDs support RDAP.

Ethereum Name Service (ENS)

Deep Whois also provides comprehensive access to Whois data for ENS native domains like .ETH and on-chain DNS domains. It even allows reverse Whois lookups of Ethereum wallet addresses, helping to identify wallet owners.

By choosing Deep Whois, you gain access to a powerful, all-encompassing tool that makes complex Whois lookups straightforward and accessible, keeping you ahead of the curve in an evolving digital landscape.