DEPRECATED: Starting in May 2018, all new subscriptions default to HTTP Basic Authentication rather than IP-based authentication. This documentation only applies to older subscriptions which have not been converted to using HTTP Basic Authentication. If you want to upgrade your legacy subscription, please see the following support document: Switch your subscription from IP to HTTP Basic Authentication.

Hosted Apache Solr currently uses IP address-based access controls to limit access to search indexes. If you use a hosting service that uses dynamic outgoing IP addresses, you may still be able to use Hosted Apache Solr, as long as you can get a list of the IP address ranges (in CIDR notation) from your hosting provider.

For example, if your hosting provider can provide a list of ranges like:

142.4.2.0/24
185.88.44.0/22

...then you can use that IP address range notation for your Hosted Apache Solr subscription; enter it exactly as given (e.g. 185.88.44.0/22) instead of entering each IP address individually.