Last updated: March 12, 2026
Welcome to DNS Checker (CHKR). By accessing and using this website and its services, you accept and agree to be bound by the terms and provisions of this agreement. These terms govern your use of DNSChkr's tools and related services.
DNSChkr provides the following categories of tools and services:
You agree to use these tools responsibly and within reasonable limits. DNSChkr reserves the right to implement rate limiting or restrict access in cases of abuse or excessive usage.
When using DNSChkr's services, you agree to:
Legitimate security research: DNSChkr's tools are designed for network diagnostics, security analysis, and infrastructure monitoring. Using these tools to check DNS records, scan ports, verify email authentication, or assess security headers for domains and systems you own or are authorized to test is a normal and intended use case. However, you are responsible for ensuring you have appropriate authorization before scanning or testing third-party infrastructure.
You may not engage in any of the following activities when using DNSChkr's services. These restrictions apply to all users, whether accessing the site directly, through the API, or by any other means.
Violation of these restrictions may result in immediate account termination, API key revocation, and permanent suspension of access. DNSChkr also reserves the right to pursue legal remedies, including injunctive relief and damages, against individuals or entities that violate these terms.
All content, features, and functionality of DNS Checker (CHKR), including but not limited to text, graphics, logos, and software, are owned by DNSChkr and are protected by international copyright and intellectual property laws.
While high availability is a priority, uninterrupted access to the services is not guaranteed. Access may occasionally be suspended for technical improvements or maintenance. DNSChkr reserves the right to discontinue, temporarily or permanently, any tool or the entire service at any time, with or without notice. In the event of a permanent service shutdown, active subscribers will be notified by email and any prepaid subscription fees for unused periods will be refunded on a pro-rata basis.
DNSChkr offers subscription plans that provide access to tools through a credit-based system. By subscribing, you acknowledge and agree to the following:
Subscriptions are billed on a recurring basis (monthly or annually, depending on the plan selected). You may cancel your subscription at any time from your account dashboard. Cancellation takes effect at the end of the current billing period.
You may upgrade or downgrade your subscription plan at any time through the Stripe billing portal, accessible from your account dashboard.
Upgrades: When upgrading to a higher-tier plan, the change takes effect immediately. Stripe charges the prorated price difference for the remaining days in the current billing cycle. Your monthly credit balance is reset to the full allowance of the new plan at the time of upgrade. Any unused credits from the previous plan are forfeited and replaced by the new plan's full credit allowance.
Downgrades: When downgrading to a lower-tier plan, the tier change takes effect immediately but your existing credit balance is preserved for the remainder of the current billing cycle. Since payment for the higher-tier plan has already been processed for the current period, you retain access to your remaining credits until the cycle ends. At the start of the next billing cycle, your credit balance resets to the new lower-tier plan's monthly allowance and you are billed at the lower rate going forward. Stripe may apply a prorated credit to your next invoice to account for the price difference.
Credit handling: Plan changes do not affect bonus credits purchased through top-up packs. Top-up credits are separate from monthly subscription credits and are not modified, forfeited, or prorated during any plan change. Monthly subscription credits are non-transferable between billing cycles regardless of plan changes.
DNSChkr offers a one-time, 7-day money-back guarantee on your very first paid subscription purchase. If you are not satisfied, you may request a full refund within 7 calendar days of the date the first subscription payment was processed. To request a refund, contact support via the contact page within the 7-day window. Refund requests received after the 7-day window has elapsed will not be honored. Refunds are processed to the original payment method and may take 5-10 business days to appear on your statement.
Eligibility: The 7-day money-back guarantee is available once per customer and applies exclusively to the first subscription purchase made on the account. “First subscription purchase” means the initial transaction in which a user subscribes to any paid plan (Starter, Plus, or Pro) for the first time.
Exclusions: The following are expressly excluded from the 7-day guarantee and are non-refundable:
After the 7-day window: Once 7 calendar days have passed from the initial subscription purchase date, all charges are final and non-refundable. Cancelling a subscription after the 7-day window stops future billing but does not entitle the subscriber to a refund for the current or any prior billing period. No partial, prorated, or pro-rata refunds are issued for unused portions of a billing cycle.
Dispute resolution: By subscribing, you acknowledge and agree to this refund policy. If a payment dispute or chargeback is filed with your card issuer or payment provider for a charge that falls outside the 7-day guarantee window or pertains to an excluded transaction listed above, DNSChkr reserves the right to present this policy and associated transaction records as evidence. Filing a chargeback for a charge that does not qualify for a refund under this policy may result in immediate account suspension.
All refunds under this guarantee are issued at the sole discretion of DNSChkr.
By creating an account, you agree to receive transactional emails necessary for the operation of your account, including authentication links, password resets, and security alerts.
You may also opt in to receive marketing communications such as product updates and DNS industry insights. You can withdraw your consent to marketing emails at any time by using the unsubscribe link in any marketing email or by updating your preferences in your account dashboard. Unsubscribe requests are processed promptly.
Emails are sent using Amazon Web Services Simple Email Service (SES). All emails are authenticated using DKIM and SPF, and a DMARC policy is published for the domain. Low bounce and complaint rates are maintained by honoring suppression lists and promptly removing invalid or unsubscribed addresses.
Some pages on this website contain affiliate links to third-party products and services. When you click on these links and make a purchase or complete a qualifying action, DNSChkr may earn a commission at no additional cost to you. DNSChkr participates in affiliate programs operated by Impact, CJ Affiliate, and other networks.
Affiliate relationships do not influence editorial content, tool functionality, or the accuracy of data provided by DNSChkr's services. The DNS tools, IP intelligence, and other utilities operate independently of any commercial partnerships.
For full details, please see the Affiliate Disclosure.
DNS Checker (CHKR) provides its services on an "as is" and "as available" basis. DNSChkr shall not be liable for any:
DNSChkr makes a best-effort attempt to provide accurate and up-to-date results. DNS, WHOIS, and IP data are queried from authoritative sources in real-time, and results reflect the state of those sources at the time of the query. However, internet infrastructure data changes frequently, and DNSChkr cannot guarantee that all results are current or error-free. Tool output should be used as one input in your decision-making process, not as the sole basis for critical infrastructure decisions.
DNSChkr maintains standard server logs (IP addresses, user agents, timestamps, pages visited) for security and abuse prevention purposes. These logs are retained for a maximum of 90 days and are automatically deleted thereafter. Log data is not shared with third parties except:
Individual tool queries (which domains or IPs you looked up) are not logged or stored. See the Privacy Policy for full details on data handling.
These terms are governed by and construed in accordance with the laws of the State of New Jersey, United States, without regard to its conflict of law provisions. Any disputes arising from these terms or the use of DNSChkr's services shall be subject to the exclusive jurisdiction of the state and federal courts located in New Jersey, United States.
DNSChkr reserves the right to modify, update, or replace any part of these terms at any time and for any reason, at the sole discretion of the site owner. This includes changes to service availability, tool offerings, credit rates, subscription pricing, usage limits, data handling practices, and any other aspect of the service described in these terms.
Changes will be posted on this page with an updated revision date. For material changes that affect active subscribers (such as pricing increases), reasonable notice will be provided by email when practicable. Continued use of the services after changes are posted constitutes acceptance of the updated terms. If you do not agree with any changes, you should discontinue use of the services and cancel any active subscription.
For any questions about these terms, contact DNSChkr at: