Answered By: Lippincott Library
Last Updated: Feb 09, 2017     Views: 59

The likely issue is that CB Insights doesn't not support IPv6 as a way to identify users coming form the UPenn network. If you are trying to create your account on a library computer, email us at, and we can contact CB Insights on your behalf.

If you are on your own computer, the best solution will be to turn off IPv6 in your network configuration.  If it’s off it won’t be used.  This shouldn’t have any negative impact for Penn users.  Everywhere on campus still supports IPv4.  

If you Google your OS along with disable IPv6, you should find directions to disable it and then you should be identifiable to CB Insights.

Every device that connects to the internet needs an IP (internet protocol) address.  The currently dominant address scheme is called IPv4 (internet protocol version 4) and uses the familiar format of , and it is limited to about 4 billion unique addresses.  Because of that limit and other deficiencies, a new address scheme called IPv6 was developed and now coexists with IPv4.  IPv6 has not been universally deployed and a lot of internet routing and infrastructure hardware along with related software applications either don’t support it or haven’t been configured to support it.  Generally speaking, large internet service providers (Comcast, Penn) do support IPv6 addressing on their networks and most modern personal computer operating systems (Windows 7 and later, Mac OS 10.7 and later) support it automatically.  As time goes by, more networks and operating systems will be configured to “prefer” the IPv6 network.  Eventually (no current timeline, but measured in many years), IPv4 will stop being supported.  Devices connected to Penn’s network in areas that use DHCP (auto-assigned addressing), that have IPv6 turned on in their network configuration will automatically get assigned an IPv6 address along with an IPv4 address.  This would primarily be in areas that support wireless AirPennNet and in dorms and other on campus residential locations.