Free WHOIS · DNS lookup · SSL & email checker
One scan pulls WHOIS, every DNS record, network, TLS, email authentication and web security — then tells you what to fix.
Registrar, lifecycle dates, locks and contacts — .tn included.
Every record with TTLs, DNSSEC and 4-resolver propagation.
IP, ASN, prefix, country, reverse DNS, hosting and CDN.
Certificate, chain, covered names, protocol and expiry.
MX, SPF lookups, DMARC policy, DKIM on 26 selectors.
Redirects, HTTPS, security headers and tech stack.
WHOIS (and its modern replacement, RDAP) shows who a domain is registered through, when it was created, when it expires, its status locks and its name servers. DNX queries RDAP first and falls back to the registry's WHOIS server — including whois.ati.tn for .tn domains.
Type the domain into DNX. If the Tunisian registry (ATI) has no record of it, DNX marks it as available and suggests other extensions such as .com.tn, .com and .net.
All public records at the domain apex — SOA, NS, A, AAAA, CNAME, MX, TXT and CAA — with their TTLs, plus the www record, DNSSEC status and a propagation check across Cloudflare, Google, Quad9 and OpenDNS resolvers.
They are DNS records that prove email really comes from your domain. SPF lists the servers allowed to send your mail, DKIM signs each message with a key published in DNS, and DMARC tells receivers what to do with mail that fails those checks. Missing or weak records let attackers spoof your domain and hurt deliverability.
Every check produces a finding — passed, suggestion, warning or critical. The score starts at 100 and loses points for each warning and critical issue (suggestions cost very little), giving a grade from A to F. Each issue comes with a plain-language fix.
Yes. DNX is free to use, needs no account, and every report has a shareable link such as dnx.tn/example.tn.