Zayo is a national provider of fiber infrastructure and bandwidth services in the United States and internationally. It owns over 68,500 route miles of fiber and provides services like dark fiber, wavelengths, Ethernet, and colocation across 45 U.S. states and several international markets. Zayo has a large global network, strong financials, and a track record of growth through acquisitions and network expansion that has expanded its infrastructure and capabilities. It offers customized bandwidth solutions to carrier, data center, and enterprise customers.

1. Zayo Overview
Carl Brandt
Carl.brandt@zayo.com
212-803-5296

2. U.S. Network
Network Statistics
• 68,500 Route Miles
• 45 States + D.C.
• 218 Markets
• 10,000 Buildings On-Net
• 136,000 Colocation Billable Sq Ft

3. International Map
Global Presence
• United Kingdom
• France
• Germany
• Netherlands
• United States
• Canada
• Japan

4. Bandwidth Infrastructure
Telecom Value Chain
Zayo Differentiators
• Deep metro assets
End Users Businesses, • Intercity routes connecting metro areas
Consumers,
from across the country
Public Sector
• Access to capital and willingness to
Communication invest in customer solutions
Services Voice, Internet, Data,
• Construction and management
Providers Wireless, Video, CDN,
Hosting, Disaster Recovery experience with large projects
• Focus on dedicated networks and strong
Bandwidth scalability
Infrastructure Dark Fiber, Lit & IP Services,
Colocation & Interconnects, • Secure and reliable all-optical network
Cellular Towers & Backhaul • Ability to offer diverse solutions from
other carriers
Enablers of Public ROW,
Infrastructure Private Land Owners,
Wireless Spectrum
4 | Proprietary and Confidential

5. Financial Strength
Zayo has demonstrated strong financial performance and industry-leading
transparency. We have demonstrated a willingness to invest for growth and
are supported by an experienced financial team
Zayo Adjusted Pro Forma Financials
Revenue = $950M | EBITDA = $563M
5 | Proprietary and Confidential

6. Infrastructure Minneapolis, MN
Chicago, IL
San Francisco, CA
Denver, CO
Philadelphia, PA
Los Angeles, CA Atlanta, GA
Dallas, TX
6 | Proprietary and Confidential

7. Our Services
Based in Louisville, CO, Zayo Group is a national provider of dark and lit fiber
bandwidth infrastructure and carrier-neutral colocation and interconnection
Dark Fiber
Virtually unlimited bandwidth with a single pair of fibers on a new
construction and existing Zayo fiber infrastructure
Wavelengths
Speeds of 1G, 2.5G or 10G in single or multiple waves
Private Line SONET/TDM
SONET and TDM-based transport services ranging from DS3–OC192
in point-to-point, hub/tail or dedicated ring configurations
Ethernet
Protected or unprotected with speeds of 100M–10G, reserved
bandwidth availability and multiple interface options
IP Services
IP Transit, Dedicated Internet Access, Virtual Private Network (VPN)
Colocation
Resilient mission-critical environment with carrier-neutral access to
domestic and international networks
7 | Proprietary and Confidential

8. Zayo Customers
Carrier Customers
Content, Media
& Others Wireless
27% 30%
PTT
9%
Enterprise & National Carrier
Public Sector 24% Enterprise & Content Customers
12%
CY4Q2012
8 | Proprietary and Confidential

9. Recent Successes
Zayo has a track record of performance
Enhanced our Network
• Some of our investments: Albuquerque, Birmingham, Boulder, Cincinnati,
Dallas, Denver, Las Vegas, Los Angeles, Nashville, NYC, Phoenix,
Richmond, San Diego, Tucson, West Virginia, and many colo facilities
Continued New Acquisitions and Integrations
• Acquired USCarrier, adding 3,500 route miles in Southeast
• Acquired FiberGate, adding 399 route miles in the Washington, D.C. region
• Acquired AboveNet, expanding the network to over 4.85 million fiber miles
and bringing a total of over 9,000 buildings on-net
• Acquired Arialink, adding 930 route miles and 437 on-net buildings
• Acquired 360networks, adding 18,500+ route miles to our network.
Recognized for Business Leadership
• Received Atlantic-ACM: U.S. Long Haul Wholesale Best-in-Class for Billing
• Zayo named a 2011 Fastest Growing Company by Denver Business Journal
• CEO and President Dan Caruso named one of Eleven Colorado Business
People to Watch in 2011 by Denver Post
9 | Proprietary and Confidential

10. Dark Fiber
Virtually unlimited bandwidth with a single pair of fibers on a combination of custom
new construction and existing Zayo fiber infrastructure
Overview
• Core building block upon which other bandwidth infrastructure is built
• Virtually unlimited capacity, A-Z custom routing and protocol versatility
• Cost-effective scaling and ability to contract for long period of time to
drive low monthly costs for customer
Application
• Build your own highly scalable WAN between locations, such as your
headquarters and data center
• Options for Build-Operate-Transfer and Build-Operate-Dedicate
Bandwidth Capacity
• Virtually unlimited bandwidth on single fiber pair
Protection
• Dedicated fiber network with diverse fiber routes and laterals,
providing full control and strong security and reliability
10 | Proprietary and Confidential

11. Dark Fiber Network Map
Intercity and Metro Network
11 | Proprietary and Confidential

12. Wavelength
Speeds of 2.5G, 10G, 40G or 100G in single or multiple waves
Overview
• Dedicated optical capacity on national metro and intercity network
• The fastest connection speeds in telecom
• Flexible network topologies
• Low-latency intercity routes between major cities and low-latency
metro routes between data centers
• Standard pricing for on-net locations in many fiber-rich metro markets
Application
• Deliver high-bandwidth without capital intensiveness of Dark Fiber
Bandwidth Capacity
• 1G, 2.5G, 10G, 40G or 100G
Protection
• Single path or dual path
• Defined or undefined routes
12 | Proprietary and Confidential

13. Private Line SONET/TDM
SONET and TDM-based transport services ranging from DS3–OC192 in point-to-
point, hub/tail or dedicated ring configurations
Overview
• Highly reliable service with fast failover
• Well-established base of equipment and services
• Expanding standard pricing across most metro markets
• Delivery intervals between 15-30 days
Application
• Proven technology for data, voice, and video transport
• Private ring systems available
Bandwidth Capacity
• DS-3, OC-3, OC-12, OC-48, OC-192
Protection
• Both logically and physically protected to ensure maximum availability
13 | Proprietary and Confidential

14. Ethernet
Protected or unprotected with speeds of 10M–10G, reserved bandwidth availability
and multiple interface options
Overview
• Options for dedication, end-to-end QoS, scalable bandwidth
• Lower equipment costs and improved familiarity for IT staff
Application
E-Line E-LAN PDN
Ethernet Service Suite
Point-to- Multi-to-Multi Fully
Point/Multi Dedicated
Bandwidth Capacity
• 100M–10G
Protection
• Protected and unprotected
14 | Proprietary and Confidential

15. Dedicated Internet Access
High-speed access to internet, intranet and extranet sites
Overview
• End-to-end connectivity available on nationwide network of Zayo fiber
• Fully redundant MPLS network for maximum reliability, with SLAs
available between 99.9% and 99.99%
• Scalable GigE and 10Gig interface option
Application
• Ideal means to link corporate data networks to other corporate data
networks as well as public networks
Bandwidth Capacity
• 10M–1G
Protection
• Protected and unprotected
15 | Proprietary and Confidential

16. IP Transit
End-to-End Service on a Tier 1 Network
Overview
• End-to-end connectivity available on nationwide network of Zayo fiber
• Fully redundant MPLS network for maximum reliability, with SLAs
available between 99.9% and 99.99%
• Connects major data centers and POPs
• Direct public and private peering connections
Application
• Ideal means to link corporate data networks to other corporate data
networks as well as public networks
Bandwidth Capacity
• 10M–10G
Protection
• Protected and unprotected
16 | Proprietary and Confidential

17. Virtual Private Network (VPN)
Connect Metro Locations with a Cost-Effective Solution
Overview
• End-to-end connectivity available on nationwide network of Zayo fiber
• Fully redundant MPLS network for maximum reliability, with SLAs
available between 99.9% and 99.99%
• IP-VPN and E-VPN
Application
• Transmit information between fixed locations
Bandwidth Capacity
• 10M–1G
Protection
• Protected and unprotected
17 | Proprietary and Confidential

18. Dedicated Internet Access Service Map
IP Services: Intercity and Metro Network
18 | Proprietary and Confidential

19. Colocation and Interconnection
zColo provides carrier-neutral colocation and
interconnection services
zColo Facilities (20)
• 200,000 square feet of fully-conditioned colocation and • Boston, MA — 1 Summer St
• Baltimore, MD — 111 Market Pl
interconnection space in major carrier hotels across the country
• Chicago — 600 S. Federal St
• Exclusive license to manage and operate New York City’s • Cincinnati, OH — 334 Gest St
60 Hudson Street Meet-Me-Room • Cleveland, OH — 1525 Rockwell Ave
• Columbus, OH — 251 Neilston St
• Cost-effective in-suite cross connects to over 130 carriers in the
• Dallas, TX — 1950 N Stemmons Fwy
zColo footprint, including 86+ in NY/NJ facilities • Dallas, TX — 2323 Bryan St
• Connectivity to Peering, Ethernet, Video and Financial Exchanges • Las Vegas, NV — 7185 Pollock Drive
• Los Angeles, CA — 707 Wilshire Blvd
• Extensive fiber riser systems provide deep reach within key carrier • Memphis, TN — 7620 Appling Center Dr
hotels to other Carrier POPs and data centers (62 suites • Minneapolis, MN — 10300 6th Ave
accessible from zColo’s NY/NJ facilities) • Nashville, TN — 209 10th Ave South
• New York City, NY — 60 Hudson St
• Transport solutions are available in every colocation facility
• New York City, NY — 111 8th Ave
• Newark, NJ — 165 Halsey St
• Philadelphia, PA — 401 N Broad St
• Pittsburgh, PA — 2500 Allegheny Center Mall
• Seattle, WA — 2001 6th Ave
• Washington DC — 2100 M St NW
19 | Proprietary and Confidential

20. Capital and Acquisitions March 2009
August 2007 $128MM Series B
$225MM Series A Round Round September 2010
$100MM High Yield
Add-on
Capital Raises
2006 2008-2009 March 2010
Zayo Group $180MM $250MM
Formed Bank Debt High Yield December 2011
Offering $315MM Term
Loan
$85MM $30MM $35MM $30MM
2006 2007 2008 2009 2010 2011 2012
2011 Acquisitions
2012 Acquisitions
M&A Transactions
2007 Acquisitions 2009 Acquisitions
2008 Acquisitions
2010 Acquisitions
CFS
USCarrier
CenturyTel (Pending)
Regional
Markets
20 | Proprietary and Confidential

21. Why Customers Choose Zayo
Unique assets, custom solutions and long-term stability
• Deep metro and intercity assets and dedicated to further
expansion of Bandwidth Infrastructure
• Unique fiber optic network supporting services designed
for scalability, reliability and security
• Transparent about network assets, making it easier to
partner with Zayo on joint projects
• Open with financial information, supporting the long-
term trust necessary to build successful partnerships
• Proven expertise with network expansion, including
construction of very large projects
21 | Proprietary and Confidential

22. Carrier Customers
22 | Proprietary and Confidential

23. Data Center Customers
23 | Proprietary and Confidential

24. Education Customers
24 | Proprietary and Confidential

25. Healthcare Customers
25 | Proprietary and Confidential

26. Government Customers
26 | Proprietary and Confidential

27. Financial Customers
27 | Proprietary and Confidential

28. Enterprise Customers
28 | Proprietary and Confidential

29. Thank You
www.zayo.com
Carl Brandt
212-803-5296
Carl.brandt@zayo.com