Zayo Capabilities OverviewMarch 2015

3 | Proprietary and Confidential

Zayo Group is an international provider of Bandwidth Infrastructure & carrier-neutral colocation and interconnection

About Zayo

Dark Fiber: Virtually unlimited bandwidth with a single pair of fibers on new construction and existing Zayo fiber infrastructure

Wavelengths: 1G, 2.5G, 10Gx or 100Gx

Ethernet: Protected or unprotected, 100M–10G, reserved bandwidth availability, multiple interface options, MEF-certified

IP Services: IP Transit, Dedicated Internet Access, IP-VPN

SONET: SONET and TDM-based transport ranging from DS3–OC192 in point-to-point, hub/tail or dedicated ring configurations

Colocation: Resilient environments with carrier-neutral access to domestic and international networks

Other Services: Mobile Infrastructure, Zayo Professional Services

17 | Proprietary and Confidential

Why Customers Choose Zayo

Technical Expertise

§ Manage critical infrastructure for carriers and large enterprises

§ Focused on providing bandwidth and streamlined product mix

§ High degree of expertise in custom network designs and large-scale deployments

§ Deep metro and intercity assets & dedicated to network expansion

§ Dense fiber optic network supporting services engineered for scalability, reliability & security

§ Transparent about network assets, making it simpler to partner with Zayo on joint projects

§ Full financial disclosure, supporting the strength of long-term partnerships, NYSE ticker: ZAYO

§ Proven expertise with network expansion, including construction of market-wide projects

14 | FY2015 Q2 Supplemental Earnings Information

Zayo x Latisys IaaS Portfolio

Private and Public Cloud§ Private Cloud: dedicated resources, multi-site replication,

managed virtualization, VMware or Hyper-V hypervisors

§ Public Cloud: self-service, utility billing, VM templates, rapid scale, multi-tenant platform

Managed IT Services§ Hosting: bare metal or dedicated managed servers

§ Performance: local/global load balancing, IT monitoring/reporting, database management

§ Security: firewall/anti-virus, SIEM, patch management

§ Storage: high-performance solutions, data back-up, SAN

§ Disaster Recovery: SAN replication, Global Load Balancing

12 | FY2015 Q2 Supplemental Earnings Information

Data CenterConnectivity-focused space & power

Dark FiberLeased fiber in metro and intercity

Mobile InfrastructureTower backhaul and small cells

Full Suite of Connectivity + Data Center Solutions

IaaSPrivate Cloud, Public Cloud & Managed IT Services

WavelengthsUp to 100G on long haul and metro DWDM

EthernetE-Line, E-LAN, E-PDN

IP ServicesDedicated Internet Access & IP Transit

SONETSONET and TDM-based transport

Media ServicesDedicated video over owned fiber

Latisys portfolio complements Zayo’s offering Zayo Solution Portfolio (Including Latisys)

Zayo Physical Infrastructure Zayo Cloud & Connectivity

13 | FY2015 Q2 Supplemental Earnings Information

Interconnect-Oriented Colocation is Lateral Bandwidth Infrastructure

13

60 Hudson, NYC

The Infomart, Dallas

12201 Tukwila, Seattle

7185 Pollock, Las Vegas

600 S Federal, Chicago

7218 McNeil, Austin

1100 White St, Atlanta

111 8th, NYC

Pro-forma for Latisys:43 sites in US & France

8 additional from Latisys

>503,000 billable sq ft187K additional from Latisys

38 Rue des Jeûneurs, Paris

36 NE 2nd St, Miami

1808 B&C Swift,Oak Brook

391 & 393 Inverness, Englewood

17222 Von Karman, Irvine

21631 & 21635 Red Rum, Ashburn

6/7 Harbour Exchange,

London

165 Halsey, Newark

800 E Business Center, Mount Prospect

209 10th Ave S, Nashville

Latisys Acquisition Fills zColo Market Gaps

5 | Proprietary and Confidential

Global Network Map

17,400 buildings

6,700,000 fiber miles

84,000 route miles

320 markets

80 average fiber count

Metro Fiber Market

Longhaul / Regional Fiber

Legend

22 | Proprietary and Confidential

New York/New Jersey

Additional Metro Maps

Northern CaliforniaUnited Kingdom

5 Miles London Metro

3 Miles New York Metro San Francisco Metro3 Miles

Thank YouWe welcome your questions and feedback.Visit Zayo.com to explore our Products and

Interactive Network Map.