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A "TXT" record in DNS is a versatile record type used for various purposes. It allows domain administrators to associate arbitrary text with a domain, commonly used for SPF configurations, domain verification, and DKIM. TXT records are configured in DNS settings, providing information such as email authentication details. They are queried for specific purposes, and their structure includes domain/subdomain, TTL, and text data.
"TXT record lookup" refers to the process of querying the Domain Name System (DNS) to retrieve the TXT (Text) records associated with a specific domain or subdomain. TXT records store arbitrary text data and are often used for various purposes, including SPF configurations, domain verification, DKIM (DomainKeys Identified Mail), and other custom information.
The primary purpose of TXT record lookup is to retrieve text data associated with a domain. This text data can serve various functions, such as specifying email authentication policies (SPF), verifying domain ownership, or providing other types of information.
When a user or system initiates a DNS query for a TXT record associated with a specific domain, the DNS resolver contacts the authoritative name servers for that domain. The authoritative name servers respond with the TXT records, if any, associated with the queried domain.
A TXT record includes the domain or subdomain name, a TTL (Time-to-Live) value, and the text data. For example:
example.com. IN TXT "v=spf1 include:_spf.example.com ~all"
One common use of TXT records is for SPF (Sender Policy Framework) configurations, where they define policies for email authentication.
TXT records are frequently used for domain verification by services like email providers or search engines. Verification involves adding a specific TXT record to prove ownership of the domain.
TXT records can store arbitrary text data for various purposes, depending on the needs of the domain administrator.
TXT records are configured in the DNS settings of a domain's authoritative name servers. Administrators or domain owners manage these settings.
When a DNS resolver queries for the TXT record of a domain, it receives the associated text data, which can be used for the intended purpose.