In CloudFront, an alternate domain name, also known as a CNAME, lets you use your own domain name (for example, in your files’ URLs instead of using the domain name that CloudFront assigns to your distribution.

What is a CNAME used for?

A Canonical Name or CNAME record is a type of DNS record that maps an alias name to a true or canonical domain name. CNAME records are typically used to map a subdomain such as www or mail to the domain hosting that subdomain’s content.

What is CNAME in AWS Route 53?

A CNAME record can redirect DNS queries to any DNS record. For example, you can create a CNAME record that redirects queries from to or to You don’t need to use Route 53 as the DNS service for the domain that you’re redirecting queries to.

What is a CNAME example?

CNAME stands for Canonical Name. A common example is when you have both and pointing to the same application and hosted by the same server. To avoid maintaining two different records, it’s common to create: An A record for pointing to the server IP address.

What is difference between alias and CNAME?

The CNAME record maps a name to another name. It should only be used when there are no other records on that name. The ALIAS record maps a name to another name, but can coexist with other records on that name.

What is difference between a record and CNAME?

Difference Between A and CNAME

An A Record maps a hostname to one or more IP addresses, while the CNAME record maps a hostname to another hostname.

How do I add a CNAME to AWS?

Adding a DNS CNAME record with the console

  1. Navigate to the Create RFC page: In the left navigation pane of the AMS console click RFCs to open the RFCs list page, and then click Create RFC.
  2. Choose a popular change type (CT) in the default Browse change types view, or select a CT in the Choose by category view.

Is CNAME a redirect?

CNAME record is actually not a redirect type record but often mistakenly used as such. The main difference between CNAME and other redirects is that CNAME is just a DNS record type (similar to A, TXT and other DNS level records) while 301, 302 redirects and URL frames are hosting server-powered redirects.

Is a DKIM a CNAME record?

When configuring CNAME records, in order to set up DKIM and SPF, you will need to add CNAME records to your DNS settings. The DNS settings must be for the domain you are looking to authenticate. The configuration tool will generate these CNAME records, which will point to your unique DKIM keys.

What is TTL AWS Route 53?

The time for which a DNS resolver caches a response is set by a value called the time to live (TTL) associated with every record. Amazon Route 53 does not have a default TTL for any record type.

What is CNAME and alias in Route 53?

An Alias record can map one DNS name to another Amazon Route 53 DNS name. A CNAME record can be created for your zone apex. An Amazon Route 53 CNAME record can point to any DNS record hosted anywhere.

What is a zone apex?

A zone apex record is a DNS record at the root of a DNS zone. For instance, the apex record for the DNS domain ‘’ would have the fully qualified name of ‘ ‘ The zone apex is where the SOA and NS records for a DNS zone are placed.

What is DNS in AWS?

DNS, or the Domain Name System, translates human readable domain names (for example, to machine readable IP addresses (for example, 192.0. 2.44).

Why it is called Route 53?

AWS Route 53 takes its name with reference to Port 53, which handles DNS for both the TCP and UDP traffic requests; the term Route may signify the routing, or perhaps the popular highway naming convention.

What is DNS and DHCP?

Domain Name System (DNS) is an Internet service that translates domain names (e.g., into IP addresses. Dynamic Host Configuration Protocol (DHCP) is a protocol for automatically assigning IP addresses and other configurations to devices when they connect to a network.

What are subnets in VPC?

A subnet is a range of IP addresses in your VPC. You can launch AWS resources, such as EC2 instances, into a specific subnet. When you create a subnet, you specify the IPv4 CIDR block for the subnet, which is a subset of the VPC CIDR block.

What is CIDR in AWS?

CIDR is an acronym that stands for Classless Inter-Domain Routing. In simpler terms, a CIDR block is an IP address range. A VPC can accommodate two CIDR blocks, one for IPv4 and another for IPv6, but for the sake of simplicity I am going to limit my discussion to IPv4.

What is a CIDR block?

CIDR blocks are groups of addresses that share the same prefix and contain the same number of bits. The combination of multiple connecting CIDR blocks into a larger whole, sharing a common network prefix, is what constitutes supernetting. The size of CIDR blocks can be determined by the length of the prefix.

Can two VPC have same CIDR?

You cannot have multiple subnets with the same (or overlapping) CIDR blocks in the same VPC, though, because AWS treats it as one continuous network. Reserved RFC 1918 CIDR blocks (AWS will let you use any of these for your VPC): 10.0.

How many IGW are in a VPC?

one Internet Gateway

Each VPC can have only one Internet Gateway.

How many subnets are in a VPC?

Q. How many subnets can I create per VPC? Currently you can create 200 subnets per VPC.

What is PCX in AWS?

pcx-ffffgggg. The VPCs are in the same AWS account and do not have overlapping CIDR blocks. You may want to use this full mesh configuration when you have multiple VPCs that must be able to access each others’ resources without restriction; for example, as a file sharing network.

What is NAT gateway in AWS?

NAT Gateway is a highly available AWS managed service that makes it easy to connect to the Internet from instances within a private subnet in an Amazon Virtual Private Cloud (Amazon VPC). Previously, you needed to launch a NAT instance to enable NAT for instances in a private subnet.

What is transit VPC in AWS?

A transit VPC is a common strategy for connecting multiple, geographically disperse VPCs and remote networks in order to create a global network transit center. A transit VPC simplifies network management and minimizes the number of connections required to connect multiple VPCs and remote networks.