Forum Moderators: open
59.11.248.33 - - [06/Jan/2006:18:18:56 -0600] "GET / HTTP/1.0" 403 198 "-" "-"
66.228.182.183 - - [06/Jan/2006:18:19:00 -0600] "GET / HTTP/1.1" 403 230 "-" "-"
66.228.182.187 - - [06/Jan/2006:18:19:00 -0600] "GET / HTTP/1.1" 403 229 "-" "-"
66.228.182.182 - - [06/Jan/2006:18:22:39 -0600] "GET / HTTP/1.1" 403 230 "-" "-"
66.228.182.186 - - [06/Jan/2006:18:23:11 -0600] "GET / HTTP/1.1" 403 230 "-" "-"
210.123.219.48 - - [06/Jan/2006:18:24:25 -0600] "GET / HTTP/1.0" 403 198 "-" "-"
66.228.182.182 - - [06/Jan/2006:18:27:52 -0600] "GET / HTTP/1.1" 403 230 "-" "-"
66.228.182.182 - - [06/Jan/2006:18:27:52 -0600] "GET / HTTP/1.1" 403 229 "-" "-"
Could be just employees, and not their crawl infrastructure.
Whoops... we can discount the 210. and 59. ( so much for me proof-reading :) ).
I doubt it's an employee ( unless he/she is really bored ) since the same occurs on about 10 sites of mine, all using no UA for the past month now.