DNSSEC Studio - Complete DNSSEC Tools & Information

DNSSEC (DNS Security Extensions) protects your domain from DNS spoofing and cache poisoning attacks by adding cryptographic authentication to DNS responses. This security protocol ensures that DNS data is authentic and hasn't been tampered with, preventing attackers from redirecting your traffic to malicious servers.

Our comprehensive suite of free DNSSEC tools helps you validate, analyze, and manage DNS Security Extensions. Whether you're checking if a domain has DNSSEC enabled, verifying the chain of trust, analyzing DNSKEY records, or decoding RRSIG signatures, we provide the tools you need to ensure proper DNSSEC configuration.

In addition to our validation tools, we offer detailed guides for implementing DNSSEC on popular platforms like Cloudflare and AWS Route 53, troubleshooting common issues, and following industry best practices. Our information pages provide comprehensive TLDR summaries, deep-dive articles, and reference material to help you understand and implement DNSSEC effectively.

DNSSEC works by creating a chain of trust that starts at the root zone and extends through top-level domains (TLDs) down to your specific domain. Each level cryptographically signs the next level using DS (Delegation Signer) records. When a DNS resolver queries your domain, it can verify the entire chain, ensuring that the DNS response hasn't been tampered with or spoofed by attackers. This prevents DNS cache poisoning attacks where malicious actors could redirect your website visitors to fake servers.

The DNSSEC protocol uses public-key cryptography with two types of keys: Key Signing Keys (KSK) and Zone Signing Keys (ZSK). The KSK is used to sign the ZSK, while the ZSK signs the actual DNS records. This two-key system allows for more efficient key rotation, as ZSKs can be rotated more frequently without requiring updates to the parent zone. DNSKEY records contain the public keys, while RRSIG (Resource Record Signature) records contain the cryptographic signatures for each record set.

Our DNSSEC checker tool provides instant validation of any domain's DNSSEC configuration. Simply enter a domain name and our tool will check for the presence of DS records, DNSKEY records, RRSIG signatures, and NSEC/NSEC3 records. The verbose mode displays complete technical details including key tags, algorithms, signature expiration dates, and raw DNS responses. This makes it an essential tool for DNS administrators, security professionals, and anyone responsible for maintaining domain security.

Implementing DNSSEC is crucial for organizations that handle sensitive data or require high security standards. Many compliance frameworks, including PCI DSS and government security requirements, recommend or require DNSSEC implementation. Even if your organization doesn't have strict compliance requirements, enabling DNSSEC is a best practice that protects your users from DNS-based attacks and demonstrates your commitment to security.

Whether you're a DNS administrator managing enterprise domains, a security professional auditing DNS configurations, or a developer learning about DNS security, our comprehensive suite of tools and guides provides everything you need. All our tools are free to use and work entirely in your browser, with no registration required. Start by checking your domain's DNSSEC status using the tool above, then explore our guides to learn how to enable DNSSEC on your domains.