The DNS TXT records associate arbitrary information to hostnames, that do not fit into other DNS RR types. DNS TXT records are popularly used in domain ownership verification, where a string hash generated by the service provider is stored and retrieved using DNS TXT records.
DNS TXT record requires three inputs:
DNS TXT records can store arbitrary text associated with the hostname. However, DNS servers may limit the length of the text that can be stored using TXT, to avoid processing large chunks of information. To avoid congestion, it is recommended to use different hostnames for different information sets, thus functioning like databases.
DNS records are hosted on the Internet through DNS hosting services. If you are using Slickalpha DNS, check this related guide to learn how to add a DNS record on your Slickalpha account.
DNS records can be queried directly on your system terminal using the dig command. To check your DNS TXT records on the browser, try our free DNS Lookup tool.
DNS TXT records are popularly used in domain ownership verification. DNS TXT records are also used in various email-related implementations such as Sender Policy Framework (SPF), DomainKeys Identified Mail (DKIM), and Domain-based Message Authentication, Reporting and Conformance (DMARC).