What is the IP address of the Advantest Licensing Back-Office (license.advantest.com/FNO)
Do not use the IP address to allow the access to the Advantest Licensing Back-Office at license.advantest.com. Instead of that please use DNS to allow the access to license.advantest.com.
Reason is that in January 2026 the IP address will not be fix anymore because of various reasons like using Akamai WAF for license.advantest.com (Akamai WAF is a security solution that protects web applications from online threats).
The formerly used fix IP address 8.31.43.39 for license.advantest.com shall not be used for example at the customer firewall or in file /etc/hosts anymore starting with January 2026.