> Date: Tuesday, May 17, 2016 01:10:52 -0700 > From: abhinav.shan...@ril.com > > We are using/consuming following Google API/s in our application. > > https://www.android.googleapis.com > https://maps.googleapis.com > https://www.googleapis.com > > We need to whitelist the IP Pool allocated/reserved by Google for > above URL/s in our firewall, as DNS resolves to new IP each time, > when we do nslookup to above specified URL/s. “
With a properly configured firewall you wouldn't run into a problem, that said -- the hostnames you list appear to be CNAMES for googleapis.l.google.com, so that's what you really need to look at. If you do a whois on the IPnumber returned for that hostname you'll see the network block and can configure your firewall accordingly. In my region -- I suspect this varies region-by-region -- I'm seeing them using IPnumbers out of two blocks. They appear to have a 5m TTL on googleapis.l.google.com, so that's the frequency that you'd want to check in order to build up a list of their blocks. There is also a 1hr TTL on the CNAMEs so you might want to watch that to see if they change things there too. I think you need to use the "-debug" flag on nslookup to see the current TTL value. A better lookup tool is "dig". -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/2E86334D98A92DA60276F5FA%40ritz.innovate.net. For more options, visit https://groups.google.com/d/optout.
