Only those, returning 200 header:

64.233.161.104
64.233.161.147
64.233.167.99
64.233.167.104
64.233.167.147
64.233.171.99
64.233.171.104
64.233.171.147
64.233.179.99
64.233.179.104
64.233.183.99
64.233.183.104
64.233.185.99
64.233.185.104
64.233.187.99
64.233.187.104
66.102.1.104
66.102.9.99
66.102.9.104
66.102.9.147
66.249.81.104
66.249.83.104
66.249.89.104
66.249.91.104
72.14.211.104
72.14.215.104
72.14.219.104
72.14.221.104
72.14.235.104
216.239.59.99
216.239.59.104
216.239.59.147

By the way, if you scrape massive amounts of comment and get banned by Google, spreading queries within these datacenters won’t solve the problem - from my own experience. The better way to deal with that is using tor that, almost rocks. Almost, because it’s too slow and I don’t know how to change IP from command line so far. So please share, if you know answer to any of these questions:

1. How to change IP (nym) from command line in FreeBSD?

2. How to affect the frequency of automatic IP changes (10 by default)?

3. (The most important) How to reduce the number of nodes between you and the target? That is 3 by default meaning using proxy to reach another proxy and then another proxy and at last the target page. I think reducing the number to 1 will speed up tor a lot.