Network address retention and assignment

摘要

A network-based services platform is configured to dynamically allocate network addresses to requesting machine instances. When a particular address becomes unassigned, it may be retained, and not allowed to be reassigned, during a period of time in which it is expected that the unassigned address may continue to be the target of outdated DNS records.

主权项

1. One or more non-transitory computer-readable media storing computer-executable instructions that, when executed, cause one or more processors to perform acts comprising:
classifying one or more network addresses as being at least one of potentially targeted by a domain name registry or not potentially targeted by the domain name registry, wherein the classifying comprises determining that the one or more of the network addresses have been unassigned from computer instances within a preceding time period, and wherein the classifying comprises querying the domain name registry to determine whether the one or more network addresses is targeted; assigning network addresses to requesting computer instances from the one or more network addresses that are classified as not potentially targeted by the domain name registry; determining a forwarding network address for at least one network address classified as potentially targeted by the domain name registry by querying one or more domain name registries; and in response to receiving a network communication addressed to the at least one network address, forwarding the communication based on the forwarding network address determined for the at least one network address.