IP 65.27.10.x or 166.19.102.x a robot?

determining if an IP is really a robot

[hairy armpit]

I'm getting a ton of hits from these two IPs. The user-agent string for the first IP is "Mozilla/4.0 (compatible ; MSIE 6.0; Windows NT 5.1)". For the second, "Mozilla/4.0 (compatible;)".

Each appears to be a valid browser. ie. not readily identified as a bot or spider.

Anybody have any insight on these IPs? Are they spiders / bots?

Thanks.

[volatilegx]

One IP is a Roadrunner account. The other belongs to:

OrgName: General Dynamics Armament Systems Corporation
OrgID: GDASC

My guess is that they are not search engine spiders.

[hairy armpit]

Thanks for your thoughts.

Strangely, the 166 IP hit the SAME page 25 times each day, in roughly 56 minute intervals. The 65 IP hit a broad spectrum of pages on 3 different days, but often many within seconds, ie. it's not a human.

Any ideas?

Thanks.

[volatilegx]

I'm sure you're right that both are robots, but spidering robots exist for many reasons beyond indexing for search engines. There are bots that look for copyright/trademark violations, email address scrapers, data miners, hackers looking for vulnerabilities... the list goes on and on.