Friends From same ISP cant connect to server

[Ryu567]

So i want to host a game server with friends andi have succesfully in doing so and "some" of my friends can join but some cant, and have noticed a pattern where all the people who cant join are someone who has the same isp as me
i looked around the internet and found some info. and the answer was that my isp has another ip address between the internet and their servers because they have a limited public ip

 

note: i paid extra to get static ip, and my router is huawei where i found in wan info that theres a gateway and ip addres, where the gateway is diferent but ip address is the same but neither of those ip allowed my friednds to connect

[jj9987]

Are you using public or private IPs (RFC1918)? What network config have you done?

[Donut417]

13 minutes ago, Ryu567 said:

i looked around the internet and found some info. and the answer was that my isp has another ip address between the internet and their servers because they have a limited public ip

 

Sounds like Carrier Grade NAT. Where your friends could be sharing the same public IP address while you actually get a dedicated one yourself. 

[Ryu567]

my ip is 66.96.xxx.xx , and i have port forwarded the necessary port, sorry if i answered wrong , because i have no knowledge in advance networking

and from a google search i think that one is public.

 

edit : i have asked my friend and his ip is 103.121.xx.xx , diferent from what i have , though i dont know if that info helps

[brwainer]

You’ll have to call your ISP and report the problem. They have to set things up so your friends who don’t have a public IP can reach your server. 

[Ryu567]

oh dang so i cant figure it out on my own?

[brwainer]

2 minutes ago, Ryu567 said:

oh dang so i cant figure it out on my own?

No, the issue is their specific setup.