Domain Name System (DNS) plays an essential role in maintaining the whole Internet infrastructure, so its failure makes the system unreachable for the user. DNS connects data with various domain names for each participating entity. This application or model was developed using Microsoft visual basic 6.0 and the access databases. DNS maintains a directory of domain names (just like our phonebook) and translates them to IPs (Internet Protocol) addresses. This makes the domain names easy for people to remember so that they can easily access websites (GOOGLE, YOUTUBE, GMAIL) on computers or machines rather than accessing the websites by searching the IP addresses.
TXT Records :
A TXT record is used to provide the capacity of the domain administrator to connect the text with a zone. The text can be either human or machine-readable. One can add these records to their respective domain setting. This record permits area heads to insert any text content into DNS records. These records are utilized for different purposes.
One model is ownership validation: To demonstrate you own the area, a supplier might expect you to add a TXT record with a specific worth to your space and email security. One domain can have many TXT records. TXT records contain a large amount of text up to 255 characters per string with special characters and spaces.
Format of DNS TXT Record :
Record: geeksforgeeks.com / type: TXT / value: "attribute=value" / TTL(Time to Live)
To prove that you are the actual owner of that particular domain name. Numerous suppliers, for example, Google, Office 365, and so forth, regularly require an uncommon verification code through TXT record to be included in DNS (Domain Name System) zone.
TXT records can be checked using $ dig txt your-domain.com or $ nslookup -type=txt your-domain.com
Common uses of DNS TXT Records :
- Site Verification Records –
This record demonstrates responsibility for domain and can be utilized to relate administrations, for example, Microsoft 365 and G-Suite to a particular area.
- DKIM records –
This record stores significant data utilized in the approval of email on the way. Kindly note that business email doesn’t uphold giving a private key expected to DKIM records.
- SPF record –
This record is utilized to demonstrate to mail trades which hosts are approved to send letters for a domain. This diminishes spam by letting getting mail servers check a message’s sending address against the area’s SPF record.
- DMARC records –
Domain-based Message Authentication Reporting and Conformance records improve phishing and spoofing email attacks.