URLs to be opened for Maps Extension

[gainkarthi]

All,

I am getting extension with out any problem when my server is open for all internet sites.

I wanted to have only the sites that accessed by extension are opened and remaining sites to be closed.

Here are my list of opened URLs,

csi.gstatic.com:443 maps.google.com:443 maps.googleapis.com:443 maps.gstatic.com:443

mts0.googleapis.com:443

mts1.googleapis.com:443

When i tried in this way i am not getting my extension.

Do i need allow any other website?

Regards,

Karthi