DNS Introduction
Amazon Route 53 is a powerful domain name
system.
Let's start with DNS, its foundational
concept.
Amazon Route 53 is a highly available and
scalable cloud-based domain name system
DNS.
It maps human-friendly URLs into machine
IP addresses, providing a reliable
and cost-effective way to route traffic to
internet applications.
The DNS system ensures that when you type
a URL like www.example.com
into your browser.
It resolves to the corresponding machine
IP address, enabling internet
functionality.
The following are the key DNS concepts.
Domain registrar.
Businesses such as Amazon Route 53 and
others manage the reservation of domain
names, helping users secure unique names
for their websites, DNS records
These are the mappings between domain
names and IP addresses.
Examples include A Records, C name
records, and NS records
each serving specific purposes for routing
and addressing, zone file.
A zone file is a critical component in DNS
containing all the DNS records for a
domain, ensuring proper resolution and
functionality.
Name server.
The name server plays an essential role by
translating human readable domain names
into machine readable
IP addresses, enabling seamless
communication between users and websites.
There are 4 types of name servers that
work together to resolve domain names into
IP
addresses.
Recursive server.
This server acts as the starting point,
taking the user's query and searching for
the answer
by contacting other servers.
Root name server as the first step in the
hierarchy, the root name server directs
the query to the correct top level domain,
also called TLD server, such as
.com or .org.
TLD name server. This server manages information for specific top level domains, guiding the query to the authoritative server responsible for the requested domain, authoritative server. The final step in the process, the authoritative server provides the definitive IP address for the requested domain, completing the resolution process. Let's break down the components of a fully qualified domain name or FQDN using the example HTTPPW. Example.com. The protocol specifies how data is transmitted between the user and the server. Common protocols include HTTP, which stands for Hypertext Transfer Protocol and HTTPS, which is the secure version of HTTP. A subdomain is a part of the domain hierarchy, often used to organize or categorize content within a domain. For example, WWW is the most commonly used subdomain for websites. The SLD represents the core of the domain name and typically reflects the entity or organization associated with the website. In this example, example serves as the SLD. The TLD is the final part of the domain name. Examples include .com.edu.org, and .gov. TLDs indicate the domain's purpose or origin and are hierarchical. The root is the highest level in the domain name system hierarchy, represented by a trailing dot at the end of the FQDN. While browsers often ignore this dot, it signifies the root zone of the DNS. The domain name is the combination of the subdomain, SLD and TLD. This human readable identifier directs users to a specific resource or service on the internet The root zone is the topmost layer of every domain name. FQDN often ends with a trailing dot, but browsers usually ignore it. Let's recap the key points about Amazon Route 53 and the domain name system. Amazon Route 53 is a scalable and cloud-based DNS service designed to map human-friendly domain names to machine-readable IP addresses. DNS, the backbone of the internet, enables seamless communication by translating URLs like www.example.com. Into their corresponding IP addresses, the essential components of DNS include domain registrar, organizations like Amazon Route 53 and GoDaddy that handle domain name reservations, DNS. Records These are mappings between domain names and IP addresses. Common examples are A Records, to name records and NS records. Zone file, a file that contains DNS records for a specific domain, name servers. Critical for DNS functionality, they translate domain names into IP addresses Types of name servers include recursive, root, TLD, and authoritative servers Domain names are structured hierarchically with TLDs such as .com or .org representing the top level. SLDs like Amazon and Amazon.com serving as the second level. Finally, FFQDNs or fully qualified domain names such as www.example.com, represent the complete domain hierarchy including an optional root zone.
TLD name server. This server manages information for specific top level domains, guiding the query to the authoritative server responsible for the requested domain, authoritative server. The final step in the process, the authoritative server provides the definitive IP address for the requested domain, completing the resolution process. Let's break down the components of a fully qualified domain name or FQDN using the example HTTPPW. Example.com. The protocol specifies how data is transmitted between the user and the server. Common protocols include HTTP, which stands for Hypertext Transfer Protocol and HTTPS, which is the secure version of HTTP. A subdomain is a part of the domain hierarchy, often used to organize or categorize content within a domain. For example, WWW is the most commonly used subdomain for websites. The SLD represents the core of the domain name and typically reflects the entity or organization associated with the website. In this example, example serves as the SLD. The TLD is the final part of the domain name. Examples include .com.edu.org, and .gov. TLDs indicate the domain's purpose or origin and are hierarchical. The root is the highest level in the domain name system hierarchy, represented by a trailing dot at the end of the FQDN. While browsers often ignore this dot, it signifies the root zone of the DNS. The domain name is the combination of the subdomain, SLD and TLD. This human readable identifier directs users to a specific resource or service on the internet The root zone is the topmost layer of every domain name. FQDN often ends with a trailing dot, but browsers usually ignore it. Let's recap the key points about Amazon Route 53 and the domain name system. Amazon Route 53 is a scalable and cloud-based DNS service designed to map human-friendly domain names to machine-readable IP addresses. DNS, the backbone of the internet, enables seamless communication by translating URLs like www.example.com. Into their corresponding IP addresses, the essential components of DNS include domain registrar, organizations like Amazon Route 53 and GoDaddy that handle domain name reservations, DNS. Records These are mappings between domain names and IP addresses. Common examples are A Records, to name records and NS records. Zone file, a file that contains DNS records for a specific domain, name servers. Critical for DNS functionality, they translate domain names into IP addresses Types of name servers include recursive, root, TLD, and authoritative servers Domain names are structured hierarchically with TLDs such as .com or .org representing the top level. SLDs like Amazon and Amazon.com serving as the second level. Finally, FFQDNs or fully qualified domain names such as www.example.com, represent the complete domain hierarchy including an optional root zone.
