Domain Data Sources & Methodology
Understand Domain Aha’s domain registration data, RDAP, WHOIS and DNS sources, Ahrefs DR, cache periods and missing values before using lookup results.
Registration Data, Website Activity and Business Relevance
Domain registration data describes a published registration record. It does not establish that the domain serves a working website, that a company is currently trading, or that two products compete. Domain Aha brings several observations into a research workflow while keeping those questions separate. Read the source and time of an observation before using it to support a decision.
The current product checks selected names through public RDAP services with registry WHOIS as a fallback where supported, loads DNS on request and, when configured, requests Ahrefs DR separately. It does not supply website traffic estimates, backlink counts, screenshots, a detected technology stack or an automatic business-competitor verdict. An external website link is a place to continue your investigation, not a successful uptime check.
- RDAP: public registration records, selected through the IANA bootstrap directory.
- DNS: configuration observations requested on demand through Cloudflare DNS over HTTPS.
- Ahrefs DR: a separate backlink-strength score, available when the integration is configured.
Where Public Registration Records Come From
The server selects an authoritative public registration service using the IANA RDAP bootstrap directory, with supported registry WHOIS services as a fallback. It requests the exact domain and preserves the available fields, which can include registrar details, published dates, nameservers, status codes and DNSSEC information. Redacted personal data remains redacted. Missing dates and identifiers stay empty rather than being inferred from other fields.
ICANN designated RDAP as the definitive source for gTLD registration information from 28 January 2025. Country-code extensions may have different services or publication policies. A suffix in the root-zone catalog does not guarantee public registration eligibility or supported lookup coverage. Domain registration data may therefore be unavailable even when a name is valid and a website exists.
How to Read Registered, No Record Found and Unknown
Registered means the service returned a matching registration record. No record found means the lookup completed without returning that record. Neither label indicates whether a website is online. A missing record also does not exclude registry reservations, policy restrictions, premium conditions or a registration that has not yet appeared in the queried source.
Unknown is used when the system cannot establish the registration outcome. Reasons include unsupported services, timeouts, rate limits, failures and inconclusive responses. A domain that has not been checked is also unverified. Missing DNS records are never used as proof that it is available. Ask a registrar to confirm current eligibility, price and terms before purchasing; this tool does not register or reserve a name.
DNS Answers Are Configuration Observations
DNS records are requested on demand through DNS over HTTPS. Read the record type and returned value together: an A or AAAA answer identifies a published address, MX concerns mail routing, and NS concerns delegation. A result may point to a CDN or infrastructure provider. It does not necessarily reveal an origin server or the company operating the website.
A registered domain can have no useful answer for a particular record type. Conversely, a DNS answer does not tell you whether a website has useful content. Investigate configuration, website activity and registration as separate tasks. This distinction matters when a domain has mail service without a website, or when a browser cannot reach a site despite an existing registration.
Ahrefs DR: Source, Cache and Missing Values
Ahrefs Domain Rating is a relative measure of backlink profile strength on a 0–100 scale. It is supplied by the official Ahrefs integration when configured and does not alter the registration result. A real score of zero is valid; an unavailable score is missing, not zero. DR is different from Moz Domain Authority, Google rankings and organic traffic.
Successful scores can be reused for up to 24 hours. The displayed observation time stays attached to that score rather than being replaced by the time you reopened a page. Availability depends on the upstream service and its limits. Compare relevant websites and inspect their content yourself; a high DR alone does not prove business relevance, demand or quality.
Freshness, Shortlists and Exports
Registration observations use brief caches: matching records can be reused for five minutes and no-record observations for one minute. Results may change after a check, and a displayed expiry date is not a guaranteed release date. A registration creation date is also different from the launch date of the website. Recheck the exact name when timing matters.
Saved names live in this browser’s local storage. They are not synced across devices, reserved for purchase or continuously monitored. Registration CSV files contain observed registration fields, source and check time; the DR tool exports its own comparison. Treat exported files as dated evidence, not current promises. Keep your manual conclusions separate from the source observations so later changes are easy to recognise.