The Address (A) record associates a domain name or subdomain with an IP address, which is the primary purpose of the DNS system. The @ sign identifies "this domain;" for example, A @ nnn.nnn.nnn ...

Aging is a feature that allows identifying stale DNS records. It actually uses two intervals and a DNS record is considered as stale once both are elapsed. These intervals are: Non-Refresh ...

NSEC was the first mechanism introduced by DNSSEC to prove the non-existence of a domain name. It works by linking records in ...

Email deliverability has been a hot topic in the email marketing industry since Google and Yahoo announced their new email ...

Discover how DNS hijacking works, explore real-world examples and discover effective ways to detect, prevent, and fix DNS ...