##### 



Exhibit 10.2.5
  Amendment No. 60 (CA) 
SOW: o No
            þ Yes
    
    Date: June 26, 2007
 Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked
[***] and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.
 
 STATEMENT OF WORK
 FOR
 CANADIAN VIRTUAL POINT OF PRESENCE ACCESS TO
NPAC/SMS PRODUCTION COMPUTER SYSTEM AND NPAC/SMS
DISASTER RECOVERY COMPUTER SYSTEM
 UNDER
 Page 1




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Amendment No. 60 (CA) 
SOW: o No
           þ Yes
    
    Date: June 26, 2007
 AGREEMENT FOR NUMBER PORTABILITY ADMINISTRATION
CENTER / SERVICE MANAGEMENT SYSTEM
 Page 2




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    
    oNoþYes
 STATEMENT OF WORK NO. 60 (CA)
 UNDER
 AGREEMENT FOR NUMBER PORTABILITY ADMINISTRATION CENTER /
SERVICE MANAGEMENT SYSTEM
 Canadian Virtual Point of Presence Access to NPAC/SMS Production Computer  System and NPAC/SMS Disaster Recovery Computer System
 1. PARTIES
 Statement of Work SOW Master
Agreement Contractor Customer
 2. EFFECTIVENESS
 st Effective Date
 3. ADDITIONAL SERVICES
 3.1
    
    Reason for this SOW
 VPOP
 Page 3




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    
    o Noþ Yes
  3.2
    
    Additional Services
  Underlying Rights
  Page 4




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    
    oNoþYes
 Patch Panel
 3.3
    
    Limitations
  3.4
    
    Non-Interference
  4.
    
    OUT OF SCOPE SERVICES
 Out of Scope
Services
 5.
    
    PROJECT SCHEDULE AND SOW TERM
 SOW Term
 Page 5




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    
    oNoþYes
  6.
    
    COMPLETION AND ACCEPTANCE CRITERIA
  N/A

    Functional Requirements SpecificationsN/A

    Requirements Traceability MatrixN/A

    External DesignN/A

    System DesignN/A

    Detailed DesignN/A

    Integration Test PlanN/A

    System Test PlanN/A

    Software Quality Assurance Program Reportü

    User DocumentationN/A

    Software Configuration Management PlanN/A

    Standards and Metrics
 7.
    
    IMPACTS ON MASTER AGREEMENT
 7.1
    
    Applicable
  None

    Master AgreementNone

    Exhibit B Functional Requirements SpecificationNone

    Exhibit C Interoperable Interface Specificationü

    Exhibit E Pricing SchedulesNone

    Exhibit F Project Plan and Test ScheduleNone

    Exhibit G Service Level RequirementsNone

    Exhibit H Reporting and Monitoring RequirementsNone

    Exhibit I Key PersonnelNone

    Exhibit J User Agreement Form
 Page 6




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    
    oNoþYes
 None

    Exhibit K External DesignNone


    Exhibit L Infrastructure/HardwareNone

    Exhibit M Software Escrow AgreementNone

    Exhibit N System Performance Plan for NPAC/SMS Servicesü

    Exhibit O Statement of Work Cost Principles
 7.2
    
    Pricing Schedule
  VPOP access to
both NPAC/SMS
Production Computer
System and NPAC/SMS
Disaster Recovery
Computer System

    
    per month in accordance with SOW 60(CA)
            8 T1 Ports
            10 T1 Ports
    
    USD$N/A
USD$N/A
    
    CDN$[* * *]
CDN$[* * *]
  8.
    
    PRICING
 8.1
    
    Obligation
 Users Liability for
Payments
 Page 7




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    

oNoþYes
  8.2
    
    Election
 Port Increase Election
 8.3
    
    Compensation
 (a)
    
    Generally
 Monthly Recurring Charge Non-Recurring Fee
 (b)
    
    Non-Recurring Fee
 [*
* *] [* * *] [* * *]
 (c)
    
    Monthly Recurring Charge
 Page 8




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    

oNoþYes
 [* * *] [* * *] [* * *] [* * *] [* * *] 1
 (d)
    
    Miscellaneous
  8.4
    
    User Billing True-Up
  
    
    CA$[* * *], through 1/31/07 under SOW 37 Revision 1 and SOW 44
 
 1
    
    The Non-Recurring Fee and the Monthly Recurring Charge are not subject to the
annual conversion rate adjustment required under the Amending Agreement, effective March 31, 2003
of the Master Agreement, as implemented in SOW46 (Annual Update to Conversion Factor) because the
amounts set forth for each are billed by the provider in Canadian Dollars. Page 9




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    

oNoþYes
 
    
    CA$[* * *], effective 2/1/07 due to circuit changes
    
    CA$[* * *], after 2 ports are added to each VPOP site as a result of Customers election of
the Port Increase Election.
 
 8.5
    
    Payment
  8.6
    
    Disputes
  8.7
    
    Taxes
 Page 10




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    

oNoþYes
  8.8
    
    Termination Costs
 Termination Charges
 Annual
Contract Value
  8.9
    
    Termination Costs under SOW37
  Page 11




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    

oNoþYes
  9.
    
    CONTINUATION OF MASTER AGREEMENT AND USER AGREEMENT
  10.
    
    MISCELLANEOUS
 10.1
    
    Counterparts
  10.2
    
    Entire Agreement
  [THIS SPACE INTENTIONALLY LEFT BLANK]
 Page 12




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##### 



Amendment No. 60 (CA)
    
    Date: June 26, 2007SOW:
    

oNoþYes
  CONTRACTOR: NeuStar, Inc.Signature:

    /s/ Michael OConnorName:

    Michael OConnorTitle:

    VP - Customer RelationsDate:
    17 July 2007CUSTOMER: Canadian LNP Consortium Inc.Signature:
       /s/ J. R. SarazinName:

  J. R. SarazinTitle:
PresidentDate:
  July 16/2007
 Page 13