A and AAAA
A records point to IPv4 addresses and AAAA records point to IPv6 addresses. Browsers use these records to find the server hosting the website.
DNS · Domains · Name service
DNS lookup
Check DNS records for a domain quickly. Choose the record type and get the DNS response in a clear, readable format.
A and AAAA records point a domain to IP addresses, MX records define mail servers, and TXT records are commonly used for SPF, DKIM, DMARC and service verification.
Enter a domain and choose a DNS record type.
Guide · DNS records
What does this DNS lookup do?
A DNS lookup shows records published in the domain’s name service. DNS records tell systems where a domain points, which servers receive email for the domain and what additional verification or policy data has been published.
NetTools.fi supports common DNS record types such as A, AAAA, MX, NS, TXT, SOA and CAA. These records are used by websites, email services, certificate authorities and many domain verification systems.
MX
MX records define which servers receive email for the domain and in what priority order they should be used.
NS
NS records define the authoritative name servers responsible for the domain’s DNS zone.
TXT
TXT records are used for SPF, DKIM, DMARC and service ownership verification.
Why do DNS records matter?
DNS is the technical address book of a domain. If DNS records are missing or incorrect, a website may not load, email may not be delivered or external services may not be able to verify the domain’s configuration.
Checking DNS records is useful when setting up a new domain, moving services between providers, troubleshooting email delivery, verifying certificates or confirming third-party service ownership records.
How to interpret the result
The result shows the DNS response for the selected record type. A single record type can return one or multiple values. For example, MX records include both the mail server and its priority, while TXT records can contain long strings such as SPF policies or service verification tokens.
If no records are found, that is not always an error. Not every domain needs every record type. For example, CAA is useful but not mandatory. A website, however, usually needs an A or AAAA record, and email usually requires MX records.
Frequently asked questions
What is the difference between A and AAAA records?
An A record points to an IPv4 address, while an AAAA record points to an IPv6 address. Many domains use both so that the service works over both IPv4 and IPv6.
What does MX priority mean?
MX priority defines the order in which mail servers should be used. A lower number means a higher priority.
Why can a domain have multiple TXT records?
TXT records are used for many purposes, including SPF policies, DKIM keys, DMARC settings and service ownership verification. That is why a domain can have several TXT records.