DNS & Website Tools

Investigate domain, DNS, and website configuration issues with online free DNS and web tools. Work with supported DNS record lookups, domain checks, and email authentication settings such as SPF, DKIM, and DMARC. Use these utilities to assist with domain troubleshooting, email deliverability checks, and common website administration tasks.

TOOLS

Free DNS & Website Tools

11 tools

🌐DNS LookupLook up DNS records including A, AAAA, CNAME, MX, TXT, NS, and SOA. Troubleshoot domain configuration, email delivery, and DNS issues online.→✅Domain ValidatorValidate domain name syntax and formatting with this free online domain validator. Check whether a domain follows common hostname rules before using it.→📧SPF GeneratorBuild an SPF record with include, IPv4, IPv6, A, MX and exists entries, an optional redirect and a failure policy. Checks the 10-lookup limit.→🔑DKIM GeneratorGenerate DKIM key pairs and DNS records in your browser. Choose your sending platform, add sender emails and get one key per domain.→🛡️DMARC GeneratorCreate a DMARC record with a policy, subdomain policy, report addresses, alignment and failure options, with advice for moving to enforcement.→✅SPF ValidatorCheck an SPF record by domain or by pasting it. Follows includes and redirects, counts DNS lookups against the limit of 10 and flags errors.→🔍DKIM ValidatorLook up a DKIM record by domain and selector, or paste one. Checks the tags, key type and size, and flags revoked or weak keys.→🛡️DMARC ValidatorCheck a domain's DMARC record or paste one. Validates tags and policy values, report addresses and external report authorization.→📋HTTP Headers CheckerInspect HTTP response headers online to troubleshoot caching, content types, security settings, and cross-origin configuration on websites and web servers.→🔒SSL CheckerCheck SSL/TLS certificate details for a website, including certificate validity and configuration information, to help troubleshoot HTTPS issues.→🚫Email Spam CheckerReview common email deliverability factors and authentication settings with this online email spam checker. Troubleshoot issues that may affect inbox placement.→