A Record Lookup tool lets you query DNS servers and get instant results.
IPv4, Address, or A record lookups are used to determine the A records associated with a domain.
Looking for easier to understand results? Use the Global DNS Checker tool.
DNS A Record
A records, known as Address records are used to store IP address information for a domain name.
A records can only store IPv4 IP addresses (e.g. 192.168.2.1). In order to store IPv6 addresses, an AAAA record must be used.
Most websites only need to have a single A record for a given identifier, however it is possible to provide multiple A records.
Example A record
An example A record may look like the following:
| Record | Type | Value | TTL |
|---|---|---|---|
| www | A | 192.168.2.1 | 3600 |
www represents identifier of the record. To set the value for the root of the domain you must use @.
A is the record type.
192.168.2.1 is the value of the record. This must be an IPv4 address.
3600 is the TTL (time to live) of the record in seconds, this example represents 1 hour. This means that when a record has had updates made to it, then it will take 1 hour to update.
Multiple A records
When multiple A records are associated with the same domain record, one is used at random – this can be useful for larger websites or services as a technique to load balance traffic across multiple servers where a single server or network device cannot handle the traffic alone.
| Record | Type | Value | TTL |
|---|---|---|---|
| www | A | 192.168.2.1 | 3600 |
| www | A | 192.168.2.2 | 3600 |