Information Series on DNS: Part 6

Abhijeet Modi/ September 13, 2021/ Blog

The following series of articles details information of DNS Records, we are covering each setting in the series, providing basic use and purpose.

What are EUI48 Records, what are they used for and how do they work?

These 48-bit IEEE records are known for keeping the EUI48 address in your DNS records. Unlike other types of DNS records, the EUI48 does not need any TTL, and neither does it have any special requirement.

What are EUI64 Records, what are they used for, and how do they work?

Just like the EUI48 records, the EUI64 records are used for storing the single 64-bit address in your DNS records. The only difference between the two is that the former is based on the 48-bit IEEEE, while the EUI64 records are used for storing 64-bit address. Similar to the EUI48, these records do not have any special requirements and they don’t come with the TTL. These records are identified by RFC 7043.

What are HINFO Records, what are they used for, and how do they work?

HINFO records are identified by RFC 8482 and they are specifically used as the information records. They provide information about the operating system as well as the hardware used. It is important to note that these records are not put on the public servers for certain reasons. This information is mainly used by the FTP. These protocols use this information when interacting with the devices of the known operating systems and CPU. The HINFO record has a TTL of 90 seconds. You need to contact the DNS provider in order to set up the HINFO records for your domain.

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