Whois Checker

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About Whois Checker

Abtoolseo created this tool as a free public service that gives you the ability to search public contacts and other information related to a domain name.

By submitting any personal data, I acknowledge and agree that the personal data I provide will be processed in accordance with the Privacy Policy and agree to be bound by the Website Terms of Service and Domain Name Registration Data Search Terms of Service  

How does domain name registration data lookup work?

Domain Name Registration Data Finder is a javascript-based client application that uses the Registration Data Access Protocol (RDAP) to query, parse, and display registration data in a human-friendly format. The displayed results come directly from registry operators  and / or  registrars in real time. If the requested information is not available in RDAP, the request will be redirected to whois. This process is known as WHOIS failure lookup, which occurs when the requested information is not available in the RDAP and the WHOIS lookup is used as a backup operation to attempt to provide available credentials.

What is Registration Data Access Protocol (RDAP)?

RDAP is a computer network communication protocol for structured access to domain name registration data. RDAP is an alternative to the WHOIS protocol and can be used to search for matching credentials on Internet resources such as domain names, IP addresses, and autonomous system numbers. In its basic form, RDAP is not intended to provide a "human-friendly" presentation of data. However, its structured output allows for more human-friendly services.

What data is available?

When a domain name is registered, the owner of the registered name must provide a set of information to the registrar. This information is called “Domain Name Registration Data”. In accordance with applicable law and ICANN policies, not all domain name registration information needs to be returned in response to a search request. As a result, registrars and registry operators may differ in what data is returned in response to a search request.

Will all available data be visible?

Some of the available Domain Name Registration Data may only be visible to those who have demonstrated a legitimate and proportionate purpose to view it and have obtained permission to do so. If the data you are looking for does not appear in response to your search query, it may not be available, or you should see a note and / or an edited label in the appropriate result field to indicate that data may be available that is not visible to you.

Understanding RDAP Search Results

Search results can come from both registrars and registry operators. The source of each result field is not listed in the search results. Therefore, the following table is intended to help you understand the fields displayed in search results and to identify the source of the data.

Result label Description A source
Domain information
Name The domain name that was entered into the search tool. Registry
Internationalized domain name The non-ASCII character domain name that was entered into the search engine, if applicable. Registry
Domain ID in the registry Domain name unique identifier in the registry. Registry
Domain status Domain name registration status. Each domain has at least one status code, but there can be more than one status code. Registry
Name servers Domain name DNS servers information. To include unicode nameserver name and IP addresses where applicable. Registry
Dates The Dates section may display multiple dates, including creation, expiration, and renewal of your domain name registration, depending on the circumstances. Registry / Registrar
Registrant contact information, administrative, technical and billing information Registrant contact information, administrative, technical and billing contacts will be displayed in this section where applicable. Registrar
Registrar information
Name The name of the registrar sponsoring the domain name registration. Registrar
IANA ID IANA Registrar ID from the IANA Registrar ID Registry
Contact email address Registrar's contact email address for reporting violations. Registrar
contact number Registrar's contact phone number. Registrar
Reseller Information
Name If the domain name was registered through a reseller registrar, the reseller's name MAY appear in the RDAP response. Registrar
Organization If the domain name was registered through a registrar's reseller organization, it MAY appear in the RDAP response. Registrar
DNSSEC Information
Delegation signature This field will display whether the delegation is DNSSEC signed or not. Registry
DS data Data fields for DNSSEC keys used as a digest by the signer of the delegation. Registry
Key data The data fields for the DNSSEC keys used. Registry
Authoritative servers
Authoritative servers The URL (s) of the authoritative server (s) (source) of search results and the date the servers were last updated. Registry / Registrar

What if the contact details are inaccurate or the service is unavailable?

If you believe that the registrant, administrative, technical, or billing contact information (if applicable) returned in response to an RDAP search or optional WHOIS opt-out search is inaccurate, or you are not getting search results because both are unavailable RDAP and WHOIS Services, you can access the WHOIS and WHOIS Complaints Form using the WHOIS Complaints link at the top of the page. These complaint forms report these concerns to the Compliance Department for further review and can be used for complaints related to RDAP services. Please note that RDAP services were not required to be implemented by registrars and registry operators until August 26, 2019.

Domain name registration data lookup performs Registration Data Access Protocol (RDAP) queries. RDAP allows users to access current registration data and was created as a possible replacement for the WHOIS protocol. Displayed results come directly from  registry operators  and / or  registrars in real time. ICANN does not generate, collect, or store any data related to RDAP compliant searches. If the requested information is not available in the RDAP, the request will be redirected to whois (whois failure lookup). In the event of a WHOIS failure search, ICANN may generate, collect, store, or store the requested domain name and results during the transition period necessary to display results in response to real-time queries.

Domain Name Registration Data Searches and WHOIS opt-out searches are shown to help users obtain information about domain name registration records and not for other purposes. Users agree to use this data only for lawful purposes in accordance with the Privacy Policy and Terms of Service of the website. SAS reserves the right to restrict or terminate your access to data and / or retrieval of domain name registration data if you fail to comply with these Terms of Use. SAS reserves the right to change these Terms of Use at any time. Any changes we make will be posted on this page. By submitting a request, users agree to be bound by these Terms of Service.