DNS-Suche
What this DNS lookup does
Enter a hostname (for example www.yoursite.com) and this tool queries live DNS for the record types your hosting stack actually publishes: IPv4 (A), IPv6 (AAAA), aliases (CNAME), mail routing (MX with priorities), delegation (NS), verification and mail-auth strings (TXT), zone authority (SOA), and certificate rules (CAA) when present. Sie sehen für den Resolver sichtbare Antworten, keinen bearbeitbaren Zonenexport. Use it to confirm what the world gets today, before you change registrars or CDN settings.
When to use it
Reach for this page when mail stops delivering, a subdomain resolves for you but not for a customer, SSL warnings mention the wrong name, or a deploy ticket says "DNS is updated" but browsers still hit the old IP. Es hilft auch nach der Migration von E-Mails oder der Aktivierung eines neuen SaaS, das Sie zum Einfügen von TXT-Beweisen auffordert. Combine results with SSL-Suche for TLS trust errors and Whois-Suche when you need registrar and expiry context alongside pure DNS facts.
Worked example
You suspect marketing email lands in spam after a provider switch. Run DNS Lookup on your apex domain and mail. hosts: verify MX priorities point at the new inbound hosts, that SPF (v=spf1) TXT matches that vendor, and that older MX rows were removed. If web traffic still goes to a retired server, compare A/AAAA against your load balancer dashboard and TTL values so you know whether stale cache or wrong records explains the drift.
Frequently asked questions
What does TTL Mittelwert?
TTL (Sekunden) gibt an, wie lange rekursive Resolver genau diese Antwort zwischenspeichern können. Eine niedrigere TTL beschleunigt die Umstellung bei Migrationen; higher TTL reduces DNS query volume but slows how fast everyone sees your edits.
Why do I see different answers than my colleague?
Resolvers cache independently and anycast DNS can route regions differently. Compare timestamps and TTL, then check whether split-horizon or GeoDNS serves alternate answers per country.
Does this prove DNS propagation is "done" everywhere?
No tool sees every resolver on Earth. Dadurch erhalten Sie eine verlässliche Momentaufnahme des hier verwendeten Abfragepfads. For global checks, sample multiple networks or use dedicated propagation monitors if you need belt-and-suspenders proof.
What is a CAA record?
CAA tells certificate authorities which issuers may mint certs for your domain. Missing or wrong CAA can block automated renewals even when HTTP validation otherwise succeeds.
Can I query PTR or DNSSEC here?
This page focuses on the common publish records listed above. Reverse DNS für IPs gehört zu Reverse-IP-Suche; DNSSEC chain validation requires resolver tooling beyond a simple RR listing.