Reverse DNS lookup for IPv4 addresses uses the in-addr.arpa domain. Looks for a domain or host name that corresponds to the given IP address via the IP address self. With forward DNS, we look for the IP address that corresponds to a specific domain.įor example if we take any domain, say BBC.com, then we will find using forward DNS The first is forward lookup and the second is reverse lookup. When we talk about DNS lookup, then in the context of that, we should definitely mention 2 opposite techniques. Before we answer the question of what a DNS Lookup is, we first need to know what DNS is and what it represents.ĭNS, which is an abbreviation for domain name system, is a kind of virtual DNS internet database, which translates domain namesĭNS Lookup is a technique that primarily, by sending a request to the DNS server, serves to find IP addresses at domain namesĪs well as obtain all DNS records for the required domain names.
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