Currently, the IP from QName filter is only available upon request. Contact the NS1 support team to request access.
The IP from QName filter extracts the IPv4 address embedded in the query name (QName) of the requestor. Subsequent filters in the Filter Chain use this IP address as the requester’s IP address — for example, geographic filters use this address to geolocate the requester. For example, if the QName is ipv22.214.171.124.1.example.com or ipv4-192-0-2-1.example.com, the filter recognizes 192.0.2.1 as the requester’s IP address. The extracted IP address is also used by Filter Chains attached to other records linked to this record via CNAME reference.
This filter extracts IPv4 addresses from the QName, but not IPv6 addresses.
This filter can be used with geographic and fencing filters to geolocate the requester based on the IP address extracted from the QName. Place this filter first (or at least ahead of the geographic or fencing filters) so that they can reference the extracted IP address.
Using this filter in the Filter Chain voids the “Enable Client Subnet” option.