TTL Archives - dnsrecord.eu

TTL (Time to Live) in DNS: How It Affects Your Website

Sep 27, 2024 Declan

Tags: Default TTL, DNS, DNS setting, Domain Name System, lower TTL, Time To Live, TTL, TTL value

TTL (Time to Live) is one essential aspect of the Domain Name System (DNS) that website owners often overlook. In this article, we’ll explain what Time to Live is, how it affects your website and the best practices for optimizing it. So, without further ado, let’s begin!

What Is TTL in DNS?

TTL, or Time to Live, is a setting in DNS that determines how long a DNS resolver (like your browser or ISP) should cache (store) information about your website’s domain before refreshing it. In simpler terms, it tells DNS servers how long they should remember your domain’s IP address before checking back for updates.

For instance, if you set a Time to Live of 3600 seconds (1 hour), any DNS resolver that looks up your domain’s information will store that data for one hour. After the hour is up, the resolver must query your DNS records again to ensure it has the most up-to-date information.

List of DNS records every beginner should know

Sep 16, 2022 Declan

Tags: A record, AAAA record, authoritative name server, CNAME records, DNS query, DNS records, domain name, IP address, IPv4, IPv6, Managed DNS service, MX record, Name server, NS record, SOA record, TTL, TXT record

The DNS records can look hard to understand for everybody new to DNS. This is why we decided to show you those that are the most common. Don’t worry. This article is very beginner-friendly.

A and AAAA records

Both the A (IPv4) and AAAA (IPv6) records are address records, and their purpose is to map (link) a domain name and an IP address. In the case of the A record, it maps the domain name to an IPv4 address, a 32-bit address. This address type has been around for a long time, and one day it will be completely replaced by the newer AAAA record. The AAAA record maps a domain name to an IPv6 address, a 128-bit address. The newer format is superior, but still, both are in use, and you can see both A and AAAA records for the same domain name. These are the first DNS records that you should learn.

What is SRV record and why is it important?