Is the family telecommunication mesh wire, but what meaning dynamic is IP?

I want to look for my friend’s news, but in his family’s telecommunication IP address demonstration is dynamic, what reason is this? The meaning said that has many IP addresses?
At present I saw has these two
222.244.183.60 Hunan Mayor Shashi ADSL telecommunication
121.229.160.99 Hunan mayor Shashi (Tianxin District) telecommunication
Ask how I did determine which is his genuine address?

Hoped that the peanut shell helps! Thanked!
The dynamic IP meaning is, the IP address is not fixed, has the server random distribution, each time will connect the wide band later the IP address is assigns an address by ISP, moreover this address will be rents, will have the period of revolution limit, will surpass the time later to assign for other main engine use.
Then in here, the first IP address is computer’s IP address, but second he turns on telecommunication server address.