Ip address changes but no settings changed.

I am using a Samsung galaxy j3 and Verizon wireless network. My phone shows one IP address when I am at work 10.246.154.214 and when i walk 200 yards to my house it changes to 100.86.234.3 and under that 200:100f:b106:eab:b8b1:d541:e3d7:3c64
My Wi-Fi is off. I use strictly data. What would cause this.
Laura CavanerAsked:
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ITSysTechSenior Systems AdministratorCommented:
Ipv6 is the 200:100f:b106:eab:b8b1:d541:e3d7:3c64 is your phone set to automatically connect to another WI-Fi close by? Maybe a neighbor?

Edit: At work are you using the Wi-Fi there?
Laura CavanerAuthor Commented:
No. Wifi is off. I use data only.
Dr. KlahnPrincipal Software EngineerCommented:
10.anything is a non-routable private network.  100.anything is also an (ARIN) non-routable private network.  So you're just going from the coverage area of one network cell into another.

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Laura CavanerAuthor Commented:
I was thinking auto connect also but I turned off  all my auto connect settings. And I can't find where I would be connected
ITSysTechSenior Systems AdministratorCommented:
Like Dr.Kahn mentioned you must be changing addresses when you move from one tower to another.  I wouldn't worry about 200:100f:b106:eab:b8b1:d541:e3d7:3c64 this is normal for an Ipv6 address. Were you concerned about a security issue?
Laura CavanerAuthor Commented:
I live next to our IT guy. Was worried I was connecting to his router. Don't want prying eyes.
ITSysTechSenior Systems AdministratorCommented:
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