Guides to DNS: nameservers, records, TTL and propagation, and how to move a domain without breaking your website or email.
Guides
A domain can be written in Bangla letters, and Bangladesh has its own Bangla-script ending, .বাংলা. Behind the scenes every such name becomes an xn-- address called Punycode. Here is how it works, and where Bangla domains still fall short.
Guides
Email from your own domain needs three DNS records to be trusted: SPF says who may send it, DKIM signs it, and DMARC says what to do when a message fails. Here are the records, the common mistakes and how to check them.
Guides
After a nameserver change, some visitors see the new site and some the old one for a while. That is DNS caching, and it follows clear rules. Here is how long it takes, why, and how to move a domain without breaking your site or email.