11 Level 3 and Global Crossing Stronger Connections. New Possibilities Geneva November 2011 © 2011 Level 3 Communications, LLC. All Rights Reserved. Level 3, Level 3 Communications, the Level 3 Communications Logo, Vyvx and MyLevel3, are either registered service marks or service marks of Level 3 Communications, LLC and/or one of its Affiliates in the United States and/or other countries. Level 3 services are provided by wholly owned subsidiaries of Level 3 Communications, Inc. Any other service names, product names, company names or logos included herein are the trademarks or service marks of their respective owners.

22 FY 2010 Key MetricsPro Forma (1) Post Synergies (2) Revenue$6.2B Adj EBITDA (3) $1.3B$1.6B Cash Balance$988M Gross Debt/ Adj EBITDA (3) 6.2x5.0x Net Debt/ Adj EBITDA (3) 5.4x4.4x Geographical Diversification (4) (5) Balanced Mix of Customers (1) Latin America $597 12% Europe $939 18% North America $3,570 70% Wholesale $2,250 44% Enterprise $2,856 56% ($ in Millions) (1)Pro Forma balances represent the combined balances and results of Level 3 and Global Crossing as of and for the year ended December 31, 2010 (2)Post Synergies balances represent pro forma balances adjusted for estimated $300 million in network and operating expense synergies post-acquisition, once achieved (3)See schedule of non-GAAP metrics for definition and reconciliation to GAAP measures Combined Company Overview (4)2010 Core Network Services plus Invest & Grow Revenue (5)Global Crossing Invest & Grow Revenue estimated by Region

33 End-to-End Global Network One of the world’s most advanced IP networks in the world Presence: Owned fiber networks with reach to North America, Latin America, Europe, the Middle East, Africa and the Asia Pacific region Connected by extensive undersea facilities reaching 5 continents Core Network: More than 45 core network countries More than 450 core network markets ~100,000 intercity miles ~30,000 metro route miles Approximately 170 metro markets First carrier to deploy global MPLS network in 2001 First global provider with IPv6 natively deployed

44 More efficient. More flexible. More capable. SIP Trunking/Unified Communications | IP Convergence | Video Communications Cloud Services | VoIP Migration | Data Center Connectivity | Smart WAN Security | Low Latency | Contact Centers | Website Acceleration Business Continuity / Disaster Recovery NEXT-GENERATION TECHNOLOGY Comprehensive Solutions Next-generation technology enabled by one of the world’s largest end-to-end IP networks End-to-End IP Network

55 Comprehensive Portfolio of Services Service and network capabilities to enable business applications Video Services Content Delivery Network (CDN) Vyvx ®/ Solutions Data Services Voice Services PRI-ISDN – Digital Trunks SIP Trunking Local Inbound VoIP Enhanced Local Toll Free Dedicated Long Distance Dedicated Audio, video and web conferencing Internet Access MPLS / IP VPN Ethernet Virtual Private Line Virtual Private LAN Service Private Line Wavelength Access Solutions Managed Router Managed Security Managed WAN Optimization Data Center Colocation Professional Services Managed / Value-Add Services SIP Trunking/Unified Communications | IP Convergence | Video Communications | Smart WAN VoIP Migration | Data Center Connectivity | Security | Low Latency Business Continuity / Disaster Recovery | Cloud Computing | Contact Centers | Website Acceleration

66 Trusted by Leaders Across Industries Level 3 provides telecommunications services to business, content, wholesale and government customers including: 9 of the top 10 U.S. banks 9 of the top 10 U.S. cable providers Top U.S. broadcast networks 9 of the top 10 U.S. Internet service providers 9 of the top 10 carriers in Europe 4 out of 5 of the top U.S. wireless service providers Largest social networking sites More than 200 federal agencies and divisions 18 of the world’s top 20 telecom carriers

77 Wholesale Telecommunications Market in CH Huge Growth in Data Centre Space  Various factors cause more demand for DC’s:  Swiss speciality for redundancy, security, and engineering Switzerland becoming highly rated for data recovery and archiving by numerous Eastern European and Middle Eastern countries  Financial sector growth in Zurich and Geneva  Power surplus and only 8% fossil fuels  New sites online:  2011: Green Lupfig BrainServe Lausanne e-Shelter Zurich  2012: ColoZueri expansion  Sites in construction: “Large Media company” CH2 Avenches DeepGreen Naefels (lake water cooling)  i/o (innovative modular datacentres) planning presence in Zurich

88  Presence day 1 in all major sites in Zurich and Geneva  Multi-million spend to connect new sites in 2010 and 2011:  1 site in Geneva  3 sites in Zurich  2 sites in Zurich Region on a new regional ring  More spend allocated for 2012 in Switzerland  Possibly 2 sites in Geneva region  Integration of CH Global Crossing PoPs and fibre network  Higher visibility in the market Switzerland An important market for Level 3

99  Christophe Fox, Switzerland Business Development   Tel  Michel Voitoux, EMEA Sales Team   Tel  Paul Gadiot, EMEA Sales Team   Tel Please contact us!