Last updated: March 12, 2026
Welcome to DNS Checker (CHKR). Your privacy is taken seriously and protecting your personal data is a priority. This privacy policy explains how data is handled when you visit this website and informs you about your privacy rights and how the law protects you.
For any privacy-related inquiries, you can reach DNSChkr at:
DNSChkr's DNS checking tools process data locally in your browser. Personal information is not collected without your knowledge. Standard server logs are maintained containing:
This information is used solely for security purposes and improving service quality. Server logs are retained for a maximum of 90 days and are then automatically deleted. Logs are not shared with third parties except where required by law or to respond to verified abuse reports.
When you use any DNSChkr tool, your query is processed in real-time and the results are returned directly to your browser. Your individual tool usage is not tracked, sold, or shared — DNSChkr does not record which users looked up which domains or IP addresses, and no query logs linking your identity to specific lookups are maintained.
Important distinction: DNSChkr independently maintains databases of publicly available domain, DNS, WHOIS, and IP data (see Section 5). This data exists regardless of whether anyone uses the tools and may be made available as bulk data products or downloads. If you look up microsoft.com using a DNSChkr tool, the fact that you looked it up is not recorded or sold. However, microsoft.com's publicly available DNS records, WHOIS data, and related infrastructure information may already exist in DNSChkr's databases and may be included in data products derived from public sources.
Below is a breakdown of how each tool category handles data:
Many DNSChkr tools display a "Recent Community Scans" section showing domains or IP addresses recently checked by all visitors. This feature may be enabled on any tool across the platform, including DNS, WHOIS, security, email, and network tools.
DNS Inspector, DNS Propagation Checker, Domain Age Checker, Domain Expiry Checker, WHOIS Lookup, Reverse WHOIS, Bulk WHOIS, Domain Availability
Email Tester, MX Record Lookup, SPF Record Checker, DKIM Record Checker, DMARC Record Checker, SMTP Diagnostics, Email Header Analyzer
IP Address Lookup, Port Scanner, Blacklist Checker, Website Reputation Checker, HTTP Security Headers, HTTP Header Checker, Redirect Checker
Robots.txt Checker, Expiring Domains
As a DNS and domain intelligence platform, DNSChkr maintains databases of publicly available internet infrastructure data. This includes information sourced from:
This data is publicly accessible to anyone querying DNS servers, WHOIS/RDAP services, or zone file access programs. DNSChkr aggregates and indexes this data to power its tools, TLD directory, rankings, and analytics. If your domain or IP address appears in DNSChkr's databases, it is because that information is part of the public internet infrastructure record, not because you used any DNSChkr tool.
DNSChkr may also make this publicly sourced data available as bulk data products, downloads, or through its API. These data products contain only information already available through public sources — they do not contain any user-specific data, tool usage records, or information about who queried what.
If you believe any publicly sourced data displayed on DNSChkr is inaccurate or you wish to request its review, contact [email protected].
To prevent abuse and ensure fair access to the tools, DNSChkr uses rate limiting based on IP addresses:
In all cases, rate limiting data is used solely for access control and abuse prevention. IP addresses used for anonymous rate limiting are held in volatile server memory and are lost when the server restarts or when the 24-hour window expires.
When you create an account on DNSChkr, the following information is collected and stored:
If you generate API keys for programmatic access, the key identifier and associated permissions are stored in your account. API keys can be revoked at any time from your account dashboard.
Account data is stored securely with encryption at rest and in transit. Authentication sessions are managed using industry-standard token-based authentication. Access controls ensure that each user can only access their own data.
You may request deletion of your account by contacting [email protected]. Upon deletion, your profile, credit balance, and any API keys are removed. Certain records such as payment transaction history may be retained as required for accounting, tax, or legal compliance obligations.
The following table summarizes how long different categories of data are retained:
| Data Type | Retention Period | Notes |
|---|---|---|
| Server logs (IP, user agent, pages) | 90 days | Automatically deleted after retention period |
| Tool query data | Not stored | Processed in real-time and discarded |
| DNS cache (DNS Inspector) | Up to 5 minutes | In-memory only, automatically cleared |
| Anonymous rate-limit counters | 24 hours | In-memory only, lost on server restart |
| Community scan entries | 30 days | Domain/IP and result only — no user identifiers |
| Account data (email, preferences) | Until account deletion | Deleted upon request |
| Credit transaction history | Until account deletion | Deleted with account, except as required by law |
| Payment records (Stripe references) | 7 years after last transaction | Retained for tax and legal compliance |
| Public infrastructure data (DNS, WHOIS) | Indefinite | Publicly sourced data, not tied to users |
DNSChkr implements the following security measures to protect data:
rejectDNSChkr does not hold SOC 2, ISO 27001, or similar formal certifications. As an independent project, these certifications are not currently pursued. If your organization requires certified vendors, evaluate whether DNSChkr's security practices meet your requirements before submitting sensitive data. For security-related inquiries, contact [email protected].
DNSChkr uses the following cookies and local storage:
_ga and _ga_* cookies used to understand site usage patterns. These are only set after consent for visitors in the EEA, UK, and Switzerland. Non-EU visitors may have these set by defaultDNSChkr does not use advertising cookies, social media tracking pixels, or any third-party cookies beyond Google Analytics.
Third-party services may be used for:
These services may collect anonymous usage data subject to their own privacy policies.
When you create an account on DNSChkr, emails related to your use of the service may be sent. These communications fall into two categories:
These are essential emails required for the operation of your account and cannot be opted out of while your account is active. They include:
With your consent, optional marketing communications may be sent, including product updates, new feature announcements, and DNS industry insights. You may opt out of marketing emails at any time by:
All unsubscribe requests are honored promptly. Opting out of marketing emails will not affect your receipt of transactional emails. DNSChkr does not sell, rent, or share your email address with third parties for their marketing purposes.
DNSChkr participates in affiliate advertising programs, including those operated by Impact (impact.com) and CJ Affiliate (Commission Junction). These programs allow DNSChkr to earn commissions by linking to third-party products and services.
When you click an affiliate link on this site, affiliate partners may:
These affiliate cookies are set by the respective affiliate networks and are governed by their privacy policies. DNSChkr does not have access to or control over the data collected by these third-party cookies. You can opt out of affiliate tracking by adjusting your browser cookie settings or using your browser's private/incognito mode.
For full details on affiliate relationships, please see the Affiliate Disclosure.
If DNSChkr is acquired, merged, or sold — in whole or in part — user account data (such as email addresses, subscription details, and credit balances) may be transferred to the acquiring party as part of the transaction. In such an event, affected users will be notified via email or a prominent notice on the site, and this privacy policy will be updated to reflect any changes in data handling practices under the new ownership.
This privacy policy reflects DNSChkr's current data handling practices as of the "Last updated" date shown at the top of this page. As the platform evolves, data practices may change. If DNSChkr begins collecting, storing, or processing data in ways not described here, this policy will be updated accordingly before those changes take effect. Any material changes will be posted on this page with an updated revision date. Continued use of the service after such changes constitutes acceptance of the updated policy.
You have the right to:
If you are located in the European Economic Area (EEA), the United Kingdom, or Switzerland, the General Data Protection Regulation (GDPR) and UK GDPR apply to how DNSChkr processes your personal data.
DNSChkr processes personal data under the following lawful bases:
In addition to the general rights listed above, EEA and UK residents have the right to:
The data controller for DNSChkr is Ishan Karunaratne. For any GDPR-related requests, contact [email protected]. Requests will be responded to within 30 days as required by GDPR Article 12(3).
DNSChkr's servers are located in the United States and the European Union (Germany, Finland). When data is processed on US-based servers, it is limited to standard server logs and real-time tool query processing. No personal data is stored beyond standard log retention periods.
If you are a California resident, the California Consumer Privacy Act (CCPA) as amended by the California Privacy Rights Act (CPRA) provides additional rights regarding your personal information.
To exercise any of these rights, contact [email protected]. Requests will be verified and responded to within 45 days as required by the CCPA.
DNSChkr does not sell or share personal information as defined by the CCPA/CPRA. No personal data is sold to data brokers, advertisers, or other third parties.