Gratis DNS-opslag for dit domæne

Hvad er DNS?

DNS står for Domain Name System. Almindeligvis kendt som internettets telefonbog, oversætter DNS domænenavne til IP-adresser, så browsere kan hente de nødvendige oplysninger.

For eksempel har hver maskine på internettet, hvad enten det er bærbare computere eller dine webservere, en unik IP-adresse. Så når du indtaster et domænenavn, for eksempel www.zylker.com, bliver dets respektive IP-adresse tilknyttet ved hjælp af DNS, og websiden indlæses i overensstemmelse hermed..

Hvilke poster skal man se i en DNS-rapport?

DNS-poster er tekstfiler, der indeholder holistisk information om det bestemte domænenavn, herunder dets IP-adresse, aliasnavne osv. Følgende er nogle af de almindelige DNS-poster:

• En post: Viser IPV4-adressen for domænet.
• AAAA-post: Viser IPV6-adressen for værten.
• CName: Viser, om den givne adresse er et alias eller underdomæne til et domæne. Alle CName-poster peger på et domæne og ikke en IP-adresse.
• MX-post: Viser SMTP-e-mail-serveren for det respektive domæne.
• TXT-post: Viser maskinlæsbare data såsom krypteringsdetaljer, afsenderpolitikramme, DKIM, DMARC osv.
• NS-post - Viser navnene og detaljerne på den autoriserede navneserver for det respektive domæne
• SOA Record: Contains administrative information about the DNS zone, including the primary name server, hostmaster email, serial number, and timing values for refresh, retry, and expiry.
• PTR Record: Used for reverse DNS lookups, mapping an IP address back to a domain name. PTR records are essential for email server validation.

How to Perform a DNS Lookup

Follow these steps to run a DNS lookup using this free tool:

1. Enter the domain name (e.g., example.com) in the input field above.
2. Click Analyze to start the DNS lookup.
3. Review the results, which include MX records, SOA records, reverse DNS lookup, name server performance, and DNS traversal data.
4. Use the tabbed results to run additional checks such as website availability, ping tests, IP lookups, and geolocation.

Understanding Your DNS Lookup Results

When you run a DNS lookup with this tool, the report is organized into the following sections:

• MX Records: Shows the mail exchange servers for the domain, their IP addresses, TTL values, and priority. Lower priority numbers indicate preferred mail servers.
• SOA Record: Displays zone authority details including the primary server, hostmaster contact, serial number, and timing intervals for refresh, retry, and expiry.
• Reverse DNS Lookup: Checks whether the domain's IP addresses have valid PTR records, which is important for email deliverability and server trust.
• Name Server Performance: Tests each authoritative name server for the domain, showing resolved IPs, TTL values, response times, and availability status.
• DNS Traversal: Traces the full DNS resolution path from root servers through TLD servers to authoritative name servers, showing response times at each hop.
• Namespace Server Delegation: Verifies that the parent zone correctly delegates to the domain's name servers and checks for consistent glue records.

Fordele ved at bruge Site24x7 DNS-værktøj:

Site24x7’s DNS-opslagsværktøj viser de relevante DNS-poster for de indtastede domænenavne. Dette er praktisk, da eventuelle ændringer i DNS-posterne registreres øjeblikkeligt. Du kan også bruge Site24x7 DNS-overvågning til at overvåge din distribuerede DNS-infrastruktur.

• Comprehensive report: Retrieve MX, SOA, NS, reverse DNS, name server performance, and DNS traversal results in a single lookup.
• Instant results: Get your DNS records displayed immediately with no signup required.
• Troubleshooting: Identify misconfigured records, missing mail servers, or delegation issues quickly.
• Free and unlimited: Run as many DNS lookups as you need at no cost.

FAQs