Exhibit 21.1

I. Subsidiaries of Fair Isaac Corporation

Name of company and name	Jurisdiction of Incorporation
under which it does business	or organization
Data Research Technologies, Inc.(1)	Minnesota
Diversified Healthcare Services, Inc. (1)	California
Innovent Technology, Inc.(2)	Nevada
Fair Isaac Credit Services, Inc. (1)	Delaware
Fair Isaac Network, Inc. (1)	Delaware
HNC Software LLC(1)	Delaware
myFICO Consumer Services Inc.(1)	Delaware
Fair, Isaac International Corporation(1)	California
Subsidiaries of Fair, Isaac International Corporation
Fair Isaac Asia Pacific Corp.(3)	Delaware
Fair, Isaac Brazil, LLC(3)	Delaware
Fair, Isaac do Brasil Ltda.(4)	Brazil
Fair Isaac Europe Limited(3)	UK
Fair Isaac India Software Private Limited(3*)	India
Fair, Isaac International Canada Corporation(3)	California
Fair, Isaac International France Corporation(3)	California
Fair, Isaac International Germany Corporation(3)	California
Fair, Isaac International Mexico Corporation(3)	California
Fair, Isaac International Spain Corporation(3)	California
Fair, Isaac International UK Corporation(3)	California
Fair Isaac UK Holdings, Inc. (5)	Delaware
Fair Isaac UK Group Limited(6)	UK
London Bridge Software Holdings Limited(7)	UK
London Bridge Group of North America, Inc. (8)	Delaware
Fair Isaac Software, Inc.(9)	Delaware
Fair Isaac (ASPAC) Pte. Ltd. (8)	Singapore
Fair Isaac International Limited(8)	UK
London Bridge Phoenix Software NZ Ltd. (10)	NZ
Fair Isaac Services Limited(8)	UK

Name of company and name	Jurisdiction of Incorporation
under which it does business	or organization
Fair Isaac UK IP Limited (8)	UK
London Bridge Software (SA) Limited (8)	UK
Fair Isaac SA Limited(3)	UK
Fair, Isaac Singapore Pte. Ltd.(3)	Singapore

II. Other Interests of Fair Isaac Corporation

     Fair Isaac Corporation has a minority equity interest in several start-up ventures. Further information may be provided upon request.

     London Bridge Software Holdings Limited (or subsidiaries) holds minority equity interests in several ventures. Further information may be provided upon request.

Footnotes:

(1)	100% owned by Fair Isaac Corporation
(2)	100% owned by Diversified Healthcare Services, Inc.
(3)	100% owned by Fair, Isaac International Corporation
(3)*	99.99% owned by Fair, Isaac International Corporation and .01% owned by Fair Isaac Corporation
(4)	99% owned by Fair, Isaac International Corporation and 1% owned by Fair, Isaac Brazil, LLC
(5)	100% owned by Fair Isaac International UK Corporation
(6)	100% owned by Fair Isaac UK Holdings, Inc.
(7)	100% owned by Fair Isaac UK Group Limited
(8)	100% owned by London Bridge Software Holdings Limited
(9)	100% owned by London Bridge Group of North America, Inc.
(10)	100% owned by Fair Isaac International Limited (f/k/a London Bridge Software Limited)