Cdnjs responding 404 from my IP

https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_SVG – responding 404, but via vpn its ok. can you help me please. The server IP – 172.16.2.16

172.16.2.16 is a private IP address on your local network. So something (network settings or router settings) is redirecting it to a local IP.