Fast Crawler v X

The infamous "Fast", or what? Checks robots.txt

[pendanticist]

203.123.188.2 - - [12/Oct/2004:11:13:00 -0700] "GET /robots.txt HTTP/1.0" 200 1681 "-" "Fast Crawler v X"

inetnum: 203.123.128.0 - 203.123.191.255
netname: PI-IN
descr: Pacific Internet Limited
descr: India
country: IN
admin-c: WH1-AP
tech-c: WH1-AP
remarks: Spam and Security: [e-mail]
remarks: Network Issues: [e-mail]
remarks: Address Block For PI India
mnt-by: APNIC-HM
mnt-lower: PIL-NOC-AP
changed: [e-mail] 19990831
changed: [e-mail] 20020206
status: ALLOCATED PORTABLE
source: APNIC

[fiestagirl]

A reverse dns says that it's Y!.