Colaboratory virtual instances IP range?

Question

I would like to introduce Google Colaboratory at our company. However, for most of our experiment, we would need to access a mongoDB server which uses whitelisting. Therefore, I am wondering if the virtual instances used by Colaboratory have a specific IP range that we could use? Otherwise, there is still the possibility to use a local runtime with tunneling to a Jupyter Notebook server like described here: https://research.google.com/colaboratory/local-runtimes.html Thanks, Pascal

Answer 1

You can determine the IP address of Colab notebook using below command.

!curl ipecho.net/plain

I have seen the Colab IP addresses in the range 35.*.*.* subnet but this might change.

Answer 2

It seems to be in 34.*.*.* and 35.*.*.* ranges.

Here's my experiment with a few restarts.

# 35.237.149.168
# 35.234.56.15
# 35.231.231.209
# 35.227.111.90
# 35.221.253.131
# 35.221.207.7
# 35.221.166.62
# 35.204.72.157
# 35.201.227.155
# 35.196.149.235
# 35.194.57.3
# 35.185.124.167
# 34.91.205.101
# 34.80.163.26
# 34.80.152.217
# 34.80.203.85
# 34.74.200.106
# 34.73.212.38
# 34.73.174.186
# 34.73.45.78
# 34.68.222.221