The details are as follows:

The number and type of the assigned IP address
One global fixed IP address is assigned for each Asahi Net User ID.

Reverse lookup
An automatically generated host name with asahi-net.or.jp domain will be assigned to the fixed IP address on Asahi Net's DNS server.

Forward lookup
Asahi Net does not register forward lookup hostname for the assigned fixed IP address.

Notes
For details on assignment of fixed IP address, please refer to the following information.

Fixed IP Address Option: Notes (Assignment of fixed IP address)