When changes are made to DNS records, such as updating an IP address, it can take time for these changes to propagate across the internet. This delay occurs because DNS caches need time to expire based on the Time to Live (TTL) value of the record. Solution: Set a lower TTL value bef...
How Does DNS Work? The Internet depends on DNS functioning correctly. Every web page, email sent and picture received relies on DNS to translate a human friendly domain name to an IP address used by servers, routers and other networked devices. When you use the Internet, it all starts with...
DNS is a naming system that gives a name to any computer or service connected to a network. DNS is utterly important and everyone should use it. Without it, we’d have to visit websites through their IP addresses, rather than their domain. So, for example, if ...
How does DNS lookup work? What are DNS records? What is my IP address? What's the difference between recursive and authoritative DNS? What is primary DNS? What is dynamic DNS? What is DNS propagation? What is TLD? What is TTL? What is a TXT record? What is an MX record? How do ...
How Does TTL Work? TTL's basic function revolves around managing information packets in relation to DNS requests. When one of these packets is created and transmitted through the internet, there is a chance that it will pass, continuously, from router to router forever. To prevent this from ...
Time to live (TTL) refers to the amount of time or “hops” that a packet is set to exist inside a network before being discarded by a router. TTL is also used in other contexts including CDN caching and DNS caching. How does TTL work? When a packet of information is created and se...
How does DNS work? Every query (sometimes called a DNS request) in the DNS follows the same logic to resolve IP addresses. When a user enters a URL, their computer progressively queries DNS servers to locate the appropriate information and resource records to address the user’s request. This...
DNS pollution is a method that makes ordinary users unable to communicate with them because they get fake target host IPs. It is a DNS cache poisoning attack (DNS cache poisoning). The way it works is: because the usual DNS query does not have any authentication mechanism, and the DNS que...
Forward DNS lookup also referred to as normal DNS lookup involves resolving a domain name into itsIP address. While reverse lookup does the opposite, it resolves an IP address into its corresponding domain name. Here, we will focus on the forward lookup simply because that’s the default looku...
Time to live (TTL) refers to the amount of time or “hops” that a packet is set to exist inside a network before being discarded by a router. TTL is also used in other contexts including CDN caching and DNS caching. How does TTL work? When a packet of information is created and se...