Latency-based resource record sets only: The Amazon EC2 region where the resource that is specified in this resource record set resides. The resource typically is an AWS resource, such as an Amazon EC2 instance or an ELB load balancer, and is referred to by an IP address or a DNS domain name, depending on the record type.

Creating latency and latency alias resource record sets in private hosted

zones is not supported.

When Amazon Route 53 receives a DNS query for a domain name and type for

which you have created latency resource record sets, Amazon Route 53 selects the latency resource record set that has the lowest latency between the end user and the associated Amazon EC2 region. Amazon Route 53 then returns the value that is associated with the selected resource record set.

Note the following:

You can only specify one ResourceRecord per latency resource record set.

You can only create one latency resource record set for each Amazon EC2


You are not required to create latency resource record sets for all Amazon

EC2 regions. Amazon Route 53 will choose the region with the best latency from among the regions for which you create latency resource record sets.

You cannot create non-latency resource record sets that have the same

values for the Name and Type elements as latency resource record sets.

Region is referenced in 1 repository