🔍 Whois Lookup ☆

Overview

Whois Lookup looks up domain registration data using RDAP, the structured, JSON-based successor of the classic whois protocol. Enter a domain like example.com and instantly see the registrar, creation and last-updated dates, the expiry date with remaining days, EPP status codes, nameservers, DNSSEC signing state and an abuse contact when the registry publishes one. Expiry dates under 30 days are highlighted, so it doubles as a renewal watchdog. Queries go directly from your browser to the public rdap.org service, which routes them to the authoritative registry for the TLD. Nothing is stored by 0Appz. Works for all TLDs that publish RDAP, which is now the majority of the internet.

What RDAP registration data includes

RDAP returns structured JSON instead of free text: registrar name and IANA ID, creation, update and expiry dates, EPP status codes such as clientTransferProhibited, the authoritative nameservers, DNSSEC signing state and, when the registry publishes one, an abuse contact. Because the dates are structured, the tool can compute days remaining to expiry and highlight domains expiring within 30 days, useful for keeping a portfolio from lapsing silently.

Processing details and limits

Property	Whois lookup behavior
Protocol	RDAP (JSON-based successor of whois)
Query route	Browser → rdap.org → authoritative registry for the TLD
Returns	Registrar, dates, expiry countdown, EPP status, nameservers, DNSSEC, abuse contact
Highlights	Expiry under 30 days flagged
Stored by 0Appz	Nothing
Cost	Free, no account, unlimited lookups

Privacy: queries go straight to the registry

The lookup leaves your browser directly for the public RDAP service, which routes it to the registry. Registry queries are public by design; 0Appz neither proxies nor stores them, and no account is involved.

Practical uses

• Watch expiry dates across a domain portfolio.
• Confirm a transfer completed and the registrar changed.
• Check DNSSEC signing before enabling strict validation.
• Find the abuse contact for a reported domain.
• Remember that privacy shields can hide registrant details. That is expected.

Related: browse the developer tools for DNS, SSL, headers and IP lookups.

WHOIS, RDAP and domain registration data

A WHOIS lookup answers who registered a domain and when, but the answers are less personal than they used to be. Registration data is held by two parties: the registry, which manages the top-level domain, and the registrar, where the domain was bought. The registry record gives the domain's status, its name servers and the creation, update and expiry dates, while the registrar record adds contact details, now mostly redacted for privacy regulations, so a personal name or email is often replaced by a proxy or a generic notice. That redaction is why WHOIS is better at due diligence than at finding people: it reliably tells you how old a domain is, whether it is about to expire, whether it is locked against transfer and which company manages it. Status codes such as clientTransferProhibited or pendingDelete are worth reading, because they explain why a transfer fails or why a domain is about to drop. RDAP is the modern replacement, returning the same data as structured JSON over HTTPS, which makes it easier to query programmatically and removes some of the inconsistency of port-43 text responses. Privacy proxies and resellers add another layer that can make ownership look like a hosting company. The lookup runs from your browser and stores nothing about the domains you check.