Nameserver lookup (NS)
NS records identify the authoritative nameservers published for a domain. Use this check when confirming a nameserver change, reviewing delegated DNS hosting, or diagnosing an incorrect delegation.
Nameserver & DNS Record Lookup
Type a nameserver or DNS-record request, then inspect public records, TTLs, response codes, and DNSSEC status.
Workspace
DNS query
Look up public DNS records
Results
Ready for a lookup
Enter a public name and choose a record typeUse Nameservers for a focused NS lookup, or All common records for a broader view.
GuideHow to use
- Enter a plain domain or a phrase such as “nameserver lookup example.com” or “MX record for example.com”.
- Confirm the automatically detected record type, choose another type manually, or query the common record types together.
- Start the lookup after confirming the detected domain and record type.
- Review response codes, DNSSEC authentication, TTLs, and record data, then copy or export the result.
Nameserver lookup and DNS record checks
A DNS lookup returns the public records attached to a domain or hostname. Enter the name directly, or describe the check in everyday language. The system recognizes nameserver, A, AAAA, CNAME, MX, TXT, CAA, SOA, SRV, and reverse-DNS requests.
A and AAAA record lookup
An A record maps a hostname to an IPv4 address. An AAAA record maps it to an IPv6 address. A site can publish either or both record types.
MX and TXT record lookup
MX records publish mail-server priorities. TXT records can contain domain verification and email-policy data such as SPF, but each TXT value must be interpreted in its own context.
CNAME, CAA, SOA, and SRV
CNAME aliases one name to another, CAA limits certificate-authority issuance, SOA describes the DNS zone, and SRV publishes the host and port for a named service.
Reverse DNS lookup (PTR)
A PTR query starts with an IPv4 or IPv6 address and asks for its published reverse-DNS hostname. A returned name does not by itself prove ownership or trustworthiness.
TTL and cached results
The time to live indicates how long a DNS record may be cached. Recent changes can temporarily produce different answers until older cached records expire.
HelpFrequently asked questions
What is a nameserver lookup?
A nameserver lookup returns the NS records that identify the authoritative DNS servers published for a domain. These records show where the domain’s DNS information is hosted.
What is the difference between an A record and an AAAA record?
An A record points a hostname to an IPv4 address, while an AAAA record points it to an IPv6 address. A hostname can publish either type or both.
What does an MX record show?
MX records identify the mail servers that receive email for a domain. Lower priority numbers are normally attempted before higher numbers.
What information can a TXT record contain?
TXT records can contain domain-verification values and email policies such as SPF, DKIM references, and DMARC-related information. The meaning depends on the service or policy that created the value.
What is a reverse DNS lookup?
A reverse DNS lookup starts with an IP address and checks its PTR record for a published hostname. The returned hostname does not by itself prove ownership or trustworthiness.
What does DNSSEC authenticated mean?
It indicates that the DNS response passed DNSSEC validation. It does not prove a website is safe, confirm domain ownership, or validate application content.
Why might DNS lookup results change?
DNS records are cached for their remaining TTL, so recent authoritative changes can take time to appear everywhere. Some domains also return different records by location.
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