Is your ISP BT.
That IP is an IP belonging to an ISP. It could be your external IP form your ISP.
whois 81.148.225.109
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See
http://www.ripe.net/db/support/db-terms-conditions.pdf
% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.
% Information related to '81.148.224.0 - 81.148.255.255'
% Abuse contact for '81.148.224.0 - 81.148.255.255' is '
[email protected]'
inetnum: 81.148.224.0 - 81.148.255.255
remarks: *******************************************************************
remarks: * Report abuse via:
http://bt.custhelp.com/app/contact/c/346,3024 *
remarks: *******************************************************************
netname: BT-CENTRAL-PLUS
descr: IP pools
country: GB
admin-c: BTCP1-RIPE
tech-c: BTCP1-RIPE
status: ASSIGNED PA
remarks: Report abuse via:
http://bt.custhelp.com/app/contact/c/346,3024
mnt-by: BTNET-MNT
mnt-lower: BTNET-MNT
mnt-routes: BTNET-MNT
created: 2008-12-03T14:06:05Z
last-modified: 2011-02-24T14:40:03Z
source: RIPE
role: BT CENTRAL PLUS - OPERATIONAL SUPPORT
remarks: *******************************************************************
remarks: * Report abuse via:
http://bt.custhelp.com/app/contact/c/346,3024 *
remarks: *******************************************************************
address: BT
address: Wholesale
address: UK
abuse-mailbox:
[email protected]
admin-c: PC487-RIPE
tech-c: SR401-RIPE
nic-hdl: BTCP1-RIPE
mnt-by: BTNET-MNT
created: 2004-06-08T09:02:16Z
last-modified: 2011-02-21T13:40:11Z
source: RIPE # Filtered
% Information related to '81.128.0.0/11AS2856'
route: 81.128.0.0/11
descr: BT Public Internet Service
origin: AS2856
mnt-by: BTNET-INFRA-MNT
created: 2002-10-22T13:45:17Z
last-modified: 2014-07-31T07:51:30Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.92.6 (WAGYU)