This document provides a cautionary statement and discusses pro forma adjustments for Level 3 Communications. It notes that some statements made in the presentation are forward-looking and subject to uncertainties outside the company's control. It identifies key risks that could prevent Level 3 from achieving its goals, including successfully integrating acquisitions, managing risks associated with the global economy, and developing new services. The document also states that comparisons to prior periods are being presented on a pro forma basis, assuming the tw telecom acquisition occurred on January 1, 2014, and that growth rates are year-over-year.

1. Level 3 Communications
Deutsche Bank Leveraged Finance Conference

2. Cautionary Statement & Pro Forma Adjustment
Some statements made in this presentation are forward-looking in nature and are based on management's
current expectations or beliefs. These forward-looking statements are not a guarantee of performance and are
subject to a number of uncertainties and other factors, many of which are outside Level 3's control, which could
cause actual events to differ materially from those expressed or implied by the statements. Important factors that
could prevent Level 3 from achieving its stated goals include, but are not limited to, the company's ability to:
successfully integrate the tw telecom acquisition or otherwise realize the anticipated benefits thereof; manage
risks associated with continued uncertainty in the global economy; maintain and increase traffic on its network;
develop and maintain effective business support systems; manage system and network failures or disruptions;
avert the breach of its network and computer system security measures; develop new services that meet
customer demands and generate acceptable margins; defend intellectual property and proprietary rights; manage
the future expansion or adaptation of its network to remain competitive; manage continued or accelerated
decreases in market pricing for communications services; obtain capacity for its network from other providers and
interconnect its network with other networks on favorable terms; attract and retain qualified management and
other personnel; successfully integrate the tw telecom and future acquisitions; effectively manage political, legal,
regulatory, foreign currency and other risks it is exposed to due to its substantial international operations; mitigate
its exposure to contingent liabilities; and meet all of the terms and conditions of its debt obligations. Additional
information concerning these and other important factors can be found within Level 3's filings with the Securities
and Exchange Commission. Statements in this presentation should be evaluated in light of these important
factors. Level 3 is under no obligation to, and expressly disclaims any such obligation to, update or alter its
forward-looking statements, whether as a result of new information, future events, or otherwise.
Comparisons to prior periods are being presented on a “pro forma” (PF) basis, assuming that the acquisition of tw
telecom took place on January 1, 2014. In addition, the growth rates disclosed in the presentation are on a year-
over-year basis. Revenue comparisons to prior periods are provided on a constant currency basis, unless
otherwise noted.
2

3. Agenda
3
 Level 3 Overview
 Financial Update
 Q&A

4. 4
Level 3 Overview

5. Company Overview
5
Over $8B Pro Forma FY 2014 Total Revenue
13,000 Employees
Connecting 60+ Countries and Counting
Approx. 350 Multi-tenant Data Centers
200,000+Route Miles of Fiber Globally
OurCompany
Over $2.2B Pro Forma FY 2014 Adjusted EBITDA

6. Global Reach
6

7. Deep North America Metro Presence
7

8. Comprehensive Portfolio
8
*Available in Latam and EMEA today
Managed & Professional Services
• Private Line,
Wavelength, and
Ethernet Transport
• IPVPN, VPLS and
EVPL
• Converged
• Dark Fiber &
Managed Fiber
• Managed Network
Services
• Cloud Connectivity
• Data Centers
• Managed Hosting
Services*
DATA
NETWORKS
• Internet Services
• Vyvx® Solutions
• Content Delivery
Network (CDN)
CONTENT
DISTRIBUTION
• Voice
• Contact Center
• Unified
Communications
& Collaboration
• Audio, Video
and Web
Conferencing
Services
VOICE AND
UC&C
• DDoS Mitigation
• Secure Access
• Managed Security
• Security
Consulting
SECURITY
• WAN
Optimization
• Website
Acceleration
• Adaptive
Network Control
Solutions
APPLICATION
PERFORMANCE

9. 9
Financial Update

10. 10
Second Quarter 2015 Highlights
Profitable Revenue Growth
 Core Network Services revenue grew 5.4% year-over-year
 Enterprise CNS revenue grew 6.7% year-over-year (1)
Strong Adjusted EBITDA Margin Performance
 Adjusted EBITDA grew to $665 million; Adjusted EBITDA Margin of 32.3%
 Achieved $115 million in annualized run-rate Adjusted EBITDA synergies since acquisition close
Improving Free Cash Flow Trajectory
 Generated Free Cash Flow of $102 million
 Multiple capital markets transactions during the quarter
 Annualized interest expense savings of $84 million for transactions year-to-date
(1) Excludes UK Government Revenue

11. $1,886
$1,941
2Q14 PF 2Q15
CNS and Enterprise Revenue
11
CNS Revenue
($ in Millions)
2Q15 Enterprise CNS Pro Forma Revenue
Growth
Note: EMEA Enterprise growth excludes UK Government Business.
5.4%
Growth
Constant Currency
2.9%
Growth
As Reported
Revenue
Constant Currency
YoY%
As Reported
YoY%
Total Enterprise 6.3% 3.8%
North America 7.1% 7.0%
EMEA(3)
4.9% (3.5%)
Latin America 5.6% (7.6%)
 2Q15 CNS revenue churn(2) was 1.0%
(1) North America Wholesale CNS revenue benefited from larger dispute settlements during the quarter
(2) Level 3 measures revenue churn as disconnects of Core Network Services (CNS) monthly recurring revenue as a percentage of CNS revenue. This calculation excludes churn from
customers who disconnected existing service in a particular location but replaced it with new services in the same location. The calculation also excludes usage
(3) EMEA Enterprise CNS growth excludes UK Government Revenue
(1)

12. Second Quarter 2015 Revenue
12
94%
CNS
6%
WVS
11%
EMEA
29%
Wholesale
9%
Latin
America
80%
North America
71%
Enterprise
Total Revenue Mix
CNS Revenue
Mix by Region
CNS Revenue Mix by
Customer Type
Metric
($ in millions)
CNS Revenue
WVS Revenue
Total Revenue
2Q15
$1,941
$120
$2,061

13. Second Quarter 2015 CNS Revenue by Services
13
$893M
8.1% YoY Growth
IP & Data Services
$577M
Transport & Fiber
$321M
7.1% YoY Growth
Voice Services
$150M
Colocation &
Datacenter
3.0% YoY Growth
0.2% YoY Decline
Note: Year-over-Year changes in revenue are pro forma and on a constant currency basis
30%
Transport
& Fiber
16%
Voice Services
8%
Colocation
& Datacenter
2Q15 Percent of
CNS Revenue by
Service Type
46%
IP & Data
Growth on an as reported basis:
• IP& Data Services: 5.2% YoY Growth
• Transport & Fiber: 0.5% YoY Growth
• Voice Services: 4.9% YoY growth
• Colocation & Datacenter: 4.5% YoY decline

14. Network Access and Adjusted EBITDA Margins
14
Continued margin expansion
Network Access Margins Adjusted EBITDA Margins(1)
64.3%
66.2%
2Q14 PF 2Q15
29.4%
32.3%
2Q14 PF 2Q15
(1) Includes $5 million and $8 million of tw telecom integration-related expenses in 2Q15 and 2Q14PF, respectively.

15. Adjusted EBITDA and Adjusted EBITDA Run Rate Synergies
15
Adjusted EBITDA
($ in millions)
Adjusted EBITDA Synergies
Metric
($ in millions) 2Q15 Total
Network Access Cost
Synergies
$11 $25
Operating Expense
Synergies
$9 $90
Total Annualized
Run-Rate Synergies
$20 $115
$5 million of integration-related
expenses in 2Q15
$200 million of expected annualized
run-rate Adjusted EBITDA savings
$597
$665
2Q14 PF 2Q15
(1) Includes $8 million of tw telecom integration-related expenses
(1)

16. 2Q14 PF 2Q15
Capital Expenditures and Free Cash Flow
16
Capital Expenditures
($ in millions)
Free Cash Flow
($ in millions)
$62
$102
$40 million
Improvement
$332 $317
2Q14 PF 2Q15
Year to date, capital expenditures of
14% of total revenue
Higher Net Cash Interest Expense of
$219 million in 2Q15

17. Capital Structure Highlights
17
(1) Excludes capital leases and other debt of approximately $209 million
June 30, 2015(1)
($ in millions)
 As of June 30, 2015, the company
had pro forma cash and cash
equivalents of approximately $549
million
 Completed multiple capital market
transactions since beginning of the
year
$300
$815
$3,471
$640
$3,600
$1,200
$800
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

18. Improving Credit Profile
18
Net Leverage and Average Interest Rate
 As of June 30, 2015, the company’s
net leverage was 4.1x
 Average interest rate was 5.1%,
compared to 6.8% in the second
quarter 2014
 Continue to target low end of 3-5x
net leverage range
6.8x 4.1x
8.4%
5.1%
2Q11 2Q15
Net Debt to LTM Adjusted EBITDA Average Interest Rate

19. 19
Moody’s (Upgraded on 8/13/15)
 Outlook: Stable
 Corporate Family Rating: Ba3 from B2
Standard & Poor’s (Upgraded on 11/5/2014)
 Outlook: Stable
 Corporate Family Rating: BB-
Fitch (Upgraded on 8/28/15)
 Outlook: Stable
 Corporate Family Rating: BB-
Corporate Credit Ratings

20. Summary
20
 Enterprise-driven Revenue Growth
 Focus on Profitable Growth
 Continued Double Digit Adjusted EBITDA Growth
 Improving Free Cash Flow growth profile
 Continue to target low end of target leverage range of 3 to 5 times
 Improving credit metrics

21. Q&A
21