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What Is a DNS Lookup?
A DNS lookup is the process of finding out which IP address, which mail server, and which name servers a domain name points to, and what other technical records it has. Looking up a domain's DNS records shows you how the domain works behind the scenes in seconds.
Since 2011, DNSBil has been one of the fastest and most detailed free DNS lookup services. Using our site, you can look up the A, AAAA, CNAME, MX, TXT, NS, DMARC and SPF records of any domain name, and instantly access the domain's WHOIS information and SSL certificate details.
What Can You Look Up with DNSBil?
- DNS Record Lookup: A, AAAA, CNAME, NS, MX, TXT, DMARC and SPF records
- WHOIS Lookup: Registration date, owner and registrar information for a domain name
- SSL Certificate: Certificate validity, issuing authority and expiration date
- IP Lookup: Your own IP address and its location information
- Domain History: Previous DNS records of a domain name
- TLD Check: Is the same name available under other extensions?
DNS Record Types
A Record
Shows the IPv4 address of a domain name. It tells you which server the domain is hosted on.
AAAA Record
The record type that shows the IPv6 address of a domain name. Used for modern IPv6 infrastructure.
MX Record
The mail server record. It determines which server receives the email sent to a domain name.
NS Record
Shows which name servers a domain name uses. It is the foundation of DNS.
TXT Record
Text-based verification records. Used for SPF, DKIM and domain verification.
CNAME Record
Redirects one domain name to another. Often used for www redirects.
SPF Record
Defines the servers that are authorized to send email for a domain name. Provides spam protection.
DMARC Record
Defines the email policy to apply based on the SPF and DKIM results.
How to Run a DNS Lookup
- Type the domain name you want to look up (for example dnsbil.com) in the search box at the top of the page.
- Click the LOOKUP button or press the Enter key on your keyboard.
- The system automatically shows you the DNS records, WHOIS, SSL and mail records.
- Review the results; if you like, you can also look at the domain's previous DNS records.
Frequently Asked Questions
Is DNS lookup free?
Yes. All operations on DNSBil, such as DNS lookup, WHOIS lookup, SSL lookup and IP lookup, are completely free. You do not need to sign up either.
Does DNSBil return results from a cache?
No. DNSBil runs lookups by going directly to the domain's own name servers. This way the answer you receive is the most up-to-date information; it is not affected by your ISP's cache.
Can I see the old DNS records of a domain?
Yes. In the lookup results, there is a DNS history link for the relevant domain. From there you can see the domain's previous A, MX and NS records.
What should I do if I see a wrong DNS record?
Some ISPs keep a DNS cache, so differences can occur. DNSBil takes its answers from the domain's authoritative NS servers, so what we show is the correct information. If you have made a change, wait for the TTL period to pass.
What is a WHOIS lookup?
WHOIS is the lookup of information about a domain name, such as its registration, owner, registration date, expiration date, registrar and name servers. DNSBil shows the WHOIS information automatically together with the DNS lookup.