AWS Route 53
Route 53 is a highly accessible and scalable Domain Name System web service.
Route 53 has three main functions: Domain registrationallows domain name registration
Domain Name System (DNS), which translates friendly domain names such as to IP addresses like
Responds to DNS queries via a global network DNS servers that are authoritative. This reduces latency
You can route Internet traffic to CloudFront or Elastic Beanstalk, ELB or S3. These resources are free of charge.
Health Checkingcan monitor and assess the health of web and email resources.
Sends automated requests to the application via the Internet to verify that it is reachable, available, functional, and functional
CloudWatch alarms can also be set up to send out notifications when a resource is unavailable.
Can be configured to redirect Internet traffic away from non-existent resources
Securitysupports both DNSSEC domain registration and DNSSEC sign
Supported DNS Resource Record Types
A (Address Formatis an IPv4 Address in dotted decimal notation.
AAAA Formatis an IPv6 Address in a colon-separated, hexadecimal format
CNAME Formatis the exact same format as a domain.
DNS protocol does not allow the creation of a CNAME for the top node in a DNS namespace. Also known as the zone apex, DNS protocol is not able to create a CNAME for this top node. the DNS name registration, the zone apex is, a CNAME record for cannot be created, but CNAME records can be created for, etc.
A CNAME record cannot be created for a subdomain if it is created. If a CNAME is created for then no other resource records sets can be created for that subdomain.
MX (Mail Xchange Format) Format contains a decimal number that indicates the priority of the MX records and the domain name for an email server
NS (Name Server Format) An NS record identifies name servers for the zone. An NS record value is the domain name for a name server.
PTR FormatA PTR Record Value element is the exact same format as a domain.
SOA (Start of Authority), FormatSOA record provides information on a domain and the Amazon Route 53 hosted zone.
SPF (Sender Policy Framework). FormatSPF records used to be used to verify the identity and sender of email messages. However, it is not recommended.
A TXT record with the applicable value, instead of an SPF record is recommended
SRV FormatAn element of SRV record value is made up of four spaces-separated values. The first three are decimal numbers that represent priority, weight, or port. The fourth value is a domain for e.g. 10 5 80
TXT (Text Format) A TXT record is a space-separated listing of double-quoted string. A single string can contain a maximum of 255 characters. Space is allowed in TXT stringsAlias Resource Records Sets in addition to the characters allowed unescaped in domain names.
Route 53 supports alias record sets. This allows routing of queries to a CloudFront distribution or Elastic Beanstalk. ELB, an S3 bucket configured for a static website or another Route 53 resource records set.
Alias records do not conform to DNS RFC, but are a Route 53 extension of DNS functionality
Alias records are similar to CNAME records and are always of type AAAA or A.
Alias records can be created for both the root domain or apex zones, such as and for subdomains such as CNAME records are only allowed for subdomains.
Route 53 automatically recognizes any changes in resource record sets that the alias resources record set refers, for example. Sites pointing to load balancers will automatically recognize changes in resource record sets.
Alias resour