Survey on IPv4 Scarcity, IPv6 Adoption, Carrier-Grade NAT Deployment

Dear NANOG readers,

we are a team of researchers from ICSI Berkeley, TU Berlin, TU Munich,
Internet Initiative Japan and UC Berkeley jointly working on a project
to assess the effects of IPv4 address exhaustion.

As part of our research, we conduct a survey among network operators.
The goal of this survey is to better understand the degree of IPv4
scarcity that ISPs face and which measures are taken to combat it (IPv4
Carrier-Grade NAT deployment, IPv4 address markets, and IPv6 transition

If you work for an ISP that connects end-users to the Internet, we would
greatly appreciate your response.

To participate, please visit

(answering should take about 5 minutes, all questions are explicitly

We will make anonymized results of this survey available to the public
in early 2016.

Thank you very much for your support!

If you have questions or concerns, please feel free to contact me
directly at prichter AT icsi DOT berkeley DOT edu.

Dear NANOG readers,

thank you very much for your participation in this survey. We already
received more than 60 replies from ISPs all over the world.

If you work for an ISP and didn't answer yet, we would greatly
appreciate your response.

Link to the survey:

(approx. 5 minutes, all questions explicitly optional)

thank you!