I use Great Wall broadband. Although I am assigned an independent IP address, I can only ping this IP address on the Internet, so I cannot access the services provided by the host and set up servers.
You may find that there are still some cases where ADSL Broadband cannot be accessed from the Internet, or no independent IP addresses are allocated at all. From the results, there are still many independent IP addresses in China Telecom, and we are ready to switch to China Telecom.
In general, China Unicom ADSL and China Telecom ADSL are used to support applications built on peanut shells. Tietong performs Nat internally and is supported in some regions after the commercial service line of the peanut shell is selected.
In this article, the customer summarized the network conditions in various regions and kept them updated at any time. Avoid unnecessary testing and time waste.
China Telecom Network (ADSL ):
Jiangsu, Zhejiang, and Shanghai: the Internet IP address is normal, 80 is normal, and communication is normal.
Guangdong, Fujian, Guangxi, and Hainan: the Internet IP address is normal, mails 80, and intercommunication is normal.
Three provinces in Northeast China: the Internet IP address is normal, the port is 80, and the interconnection is normal.
Anhui: Abnormal. The Internet IP address is normal, full sealing, and intercommunication is abnormal.
China Unicom network (ADSL ):
Beijing, Tianjin, Hebei, Shanxi, Inner Mongolia, and Shandong: the Internet IP address is normal, 80 mails are blocked, and intercommunication is normal.
Three provinces in Northeast China: the Internet IP address is normal, the port is 80, and the interconnection is normal.
Tietong network:
Northeast China, North China, and East China: the Internet IP address is normal, 80 mails are blocked, and intercommunication is normal.
South China and western China: the Internet IP address is normal, the IP address is 80, and communication is abnormal. China Telecom and China Unicom cannot access the IP address.
Radio/TV network:
Not supported nationwide.
Apu Broadband:
Wuhan: Internet IP exception, see the link: http://2ddns.iego.cn/ip66-not-support-ddns.html
Not tested in other regions.
Great Wall Broadband:
Internet IP addresses can be obtained in some regions, but an exception occurs during intercommunication.
Wasu Broadband:
Hangzhou: the Internet IP address is normal and there are no 80 mails, so there may be problems with intercommunication.