# Reverse DNS Consistency
This data call returns details on the reverse DNS delegations and its consistency with routed and registered IP space. The input can be a single prefix or an ASN, in which case all routed and registered prefixes for this ASN are used as an input.
GET /data/reverse-dns-consistency/data.json?resource=193.0.0.0/21
# Parameters
| Key | Value | Info | Required |
|---|---|---|---|
| resource | Prefix or ASN for the query | - | YES |
| ipv4/ipv6 | Filter option on IP version | e.g. &ipv4=false or &ipv4=0 | NO - by default both versions are displayed |
# Data Output
KeyInfoprefixesHolds the results separated in "v4" and "v6" results. Results per IP version are grouped by prefixes.domainsReturns all reverse DNS delegations within the prefix given in this key.
| domain | The end time of the period. |
| found | True if the prefix is found in the RIPE Registry. |
| prefix | The prefix this domain result is based on. |
completeTrue if all the returned delegations cover the entire IP space for this prefix.query_timeHolds the time the query was carried outresourceDefines the resource used for the queryipv4/ipv6Reflects the filter options on IP versions.
# Code Examples
# Available versions for this data call:
0.3
This is the current and only version of this API call.