212.20.147.34 -> Whois?

[akvario]

212.20.147.34 - - [26/Feb/2003:14:33:27 +0100] "HEAD /index.html HTTP/1.1" 304 - "-" ":robot/1.0 (linux) ( admin e-mail: undefined [neofonie.de...]

[marcs]

If you are looking for info on the IP :

whois [e-mail]
[whois.ripe.net]
% This is the RIPE Whois server.
% The objects are in RPSL format.
%
% Rights restricted by copyright.
% See [ripe.net...]

inetnum: 212.20.147.0 - 212.20.147.255
netname: INFONIE-GMBH
descr: infonie GmbH
country: DE
admin-c: WE1410-RIPE
admin-c: CK9-RIPE
tech-c: NG2000-RIPE
status: ASSIGNED PA
remarks: NCC#2000122703
mnt-by: GAT-NIC
mnt-lower: GAT-NIC
changed: [e-mail] 20001208
changed: [e-mail] 20001211
changed: [e-mail] 20021127
source: RIPE

route: 212.20.128.0/19
descr: DE-GATEL-980427
origin: AS13129
mnt-by: GAT-ROUTE
changed: [e-mail] 20000327
changed: [e-mail] 20000331
source: RIPE

role: NOC GAT
address: Global Access Telecommunications, Inc.
Stephanstr. 3
60313 Frankfurt
DE
phone: [phone]
fax-no: [phone]
e-mail: [e-mail]
admin-c: KK272-RIPE
tech-c: UK41-RIPE
tech-c: JC226-RIPE
tech-c: JK1540-RIPE
tech-c: JMM71-RIPE
nic-hdl: NG2000-RIPE
mnt-by: GAT-MNT
changed: [e-mail] 19980114
changed: [e-mail] 19990511
changed: [e-mail] 19990720
changed: [e-mail] 19990727
changed: [e-mail] 20010426
changed: [e-mail] 20010514
changed: [e-mail] 20010618
changed: [e-mail] 20020124
changed: [e-mail] 20020308
changed: [e-mail] 20021105
source: RIPE

person: Wolfram Eifler
address: infonie GmbH
address: Breite Str. 30/31
address: DE-10178 Berlin
address: Germany
phone: [phone]
e-mail: [e-mail]
nic-hdl: WE1410-RIPE
notify: [e-mail]
notify: [e-mail]
mnt-by: DTAG-NIC
changed: [e-mail] 20000824
source: RIPE

person: Claus Koch
address: Quitzowstr. 107
address: 10551 Berlin
address: DE
phone: [phone]
e-mail: [e-mail]
nic-hdl: CK9-RIPE
notify: [e-mail]
mnt-by: GAT-NIC
changed: [e-mail] 19950217
changed: [e-mail] 19960722
changed: [e-mail] 19990625
changed: [e-mail] 20001201
source: RIPE

Or the short answer, it belongs to "infonie, which matches the user agent string.