Saturday, January 26, 2008

Yahoo Slurp Using New IPs

Yesterday my bot blocker notified me of a new range of IPs being used by Slurp that I haven't seen before.

This is a prime example of why I keep telling people that still use IP checking only to update their code and use full trip DNS checking to validate major search engines to avoid bouncing spiders with new IPs but people just don't listen.

Hope the following helps for anyone still validating Slurp by IP only.

The user agent:

"Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)"
A few reverse DNS samples:
67.195.44.83 [lm302008.crawl.yahoo.net.]
67.195.44.80 [lm302005.crawl.yahoo.net.]
67.195.44.84 [lm302009.crawl.yahoo.net.]
67.195.44.103 [lm302028.crawl.yahoo.net.]
67.195.44.100 [lm302025.crawl.yahoo.net.]
67.195.44.96 [lm302021.crawl.yahoo.net.]
67.195.44.99 [lm302024.crawl.yahoo.net.]
67.195.44.92 [lm302017.crawl.yahoo.net.]
The complete list of new IPs Slurp used:
67.195.44.100
67.195.44.101
67.195.44.102
67.195.44.103
67.195.44.109
67.195.44.75
67.195.44.76
67.195.44.77
67.195.44.78
67.195.44.79
67.195.44.80
67.195.44.81
67.195.44.82
67.195.44.83
67.195.44.84
67.195.44.85
67.195.44.86
67.195.44.87
67.195.44.89
67.195.44.90
67.195.44.91
67.195.44.92
67.195.44.93
67.195.44.94
67.195.44.95
67.195.44.96
67.195.44.97
67.195.44.98
67.195.44.99

2 comments:

Ian said...

Actually it goes from .75 to .114, not .109

IncrediBILL said...

Thanks

I can only post what IPs hit my site, and they didn't go to .114.

I added the whole d-block to my filter.