我装的长城宽带为什么有时候IP显示其它省市

那是网关的问题

我朋友家的铁通，明明是在北京，在显IP的QQ上显示的是河北沧州

就是这样。

Great Wall
China's famous Great Wall, also there are many people throughout the year to play.
Great Wall is China's ancient miracle created by the working people. Since Qin Shihuang, the construction of the Great Wall has been a major project. According to records, the emperor used to build the Great Wall nearly 1 million labor force, the country's population of 1 / 20! There was no machinery, all have to rely on human labor, and the working environment is mountains, cliffs Shenhe. One can imagine that a lot of people did not take painstaking labor, it is impossible to complete this enormous project.