Cogent IP TransitCarriers &

ServiceProviders

Application &

ContentProviders

SERVICE LEVEL AGREEMENT (SLA)

Network Availability 100%

Packet Delivery > 99.9%

Network LatencyIntra North America < 45 msIntra Europe < 35 msTransatlantic < 85 msTranspacific < 125 ms

Installation Guarantee 17 business days or less

Network Operations & Customer Support Centers

Washington, DC • Herndon, VAFrankfurt - Germany • Madrid - Spain • Paris - France

24/7 customer support and online account management.Our average answer time for support calls is less than 30 seconds.

1-877-875-4432www.cogentco.comsales@cogentco.com

Tier 1 NetworkOur IP Transit service runs over Cogent's Tier 1 optical IP network, which is one of the largest of its kind. Cogent operates AS174, a historic autonomous system of the Internet. The Cogent network is directly connected to more than 6,240 other networks worldwide.

Connected to ContentIf you are an access provider, Cogent’s IP Transit service will connect you and your end users to the most popular content and application providers on the Internet - just one hop away! Your customers will appreciate low latency access to the best of what the Internet has to offer.

Connected to EyeballsCogent’s IP Transit service offers application and content providers the most reliable, scalable and cost-effective way to connect to eyeball networks. Whether your business is gaming, VoIP, social networking, streaming media, or the latest application, Cogent’s network is the best way to expose your content to end users.

FeaturesFeature-rich IP Transit in over 950 data centers globally

Flat or burst billing IPv6 ready

Multiple BGP sessions Blackhole server

Primary / Secondary DNS Link Aggregation

IPv4 addresses

InterfacesA wide variety of interfaces to fit your needs

Fast Ethernet 10 - 100 Mbps

Gigabit Ethernet 100 Mbps - 1 Gbps

10 Gigabit Ethernet 500 Mbps - 10 Gbps

100 Gigabit Ethernet 10 Gbps - 100 Gbps

Features

Single worldwide Tier 1 AS174BGP or static routing configurationBilling Options: flat rate or usage-basedGlobal Network Availability: 100%Packet Delivery: 99.9%Installation: <17 Business Days (On-Net)On-Net Interfaces: Fast E, GigE, 10GigEOff-Net Interfaces: T1/E1, DS3, OC-x/STM-n, EthernetCustomer Support: Available 24x7x365, Global NOCs in Washington, DC and Madrid, SpainOptions: Multiple BGP Sessions, Primary o Secondary DNS, Black Hole Server, Back-up Mail Server, IPv6 Native / Dual-Stack

Cogent’s All-Optical IP Network

@The Most Interconnected Network in the World!

CogentAS174

IP Backbone

Fiber MetroNetwork

Fiber Metro

Network

LeasedLine

CorporateOn-Net Site

CogentData Center

Carrier-NeutralData Center

Off-Net Site

The Cogent AdvantageCogent provides IP Transit connectivity to thousands of businesses across the globe. Whether you are a content provider or a carrier / ISP, Cogent bandwidth is the right choice. We offer more service locations than any other Tier 1 carrier and outstanding connectivity to major access and content networks throughout the world. Powered by one of the most interconnected networks, Cogent provides reliable, scalable and affordable bandwidth. Our service is backed by local customer support centers and an industry leading Service Level Agreement.

Tokyo

Hong Kong

Singapore

To Marseille

Vigo

Porto

Lisbon

Bologna

Barcelona

Poitiers

Grenoble

Lyon

Rennes

Madrid

Berlin

Nantes

Bilbao Toulouse

Valencia

San Sebastian

Nice

Rouen

Lille

Reims

Dresden

Munich

Oslo

Bremen

Dortmund

Caen

Helsinki

Padua/Venice

Florence

Stockholm

Hamburg

Prague

Budapest

Bordeaux

Paris

ToursStrasbourg

Stuttgart

Zurich

Nuremberg

Arezzo

Bucharest

Dublin Manchester

CopenhagenMalmo

CologneDusseldorf

Brussels

Glasgow

Slough

Bratislava

Kiev

Sofia

Milan

Vienna

Ljubljana

Zagreb

Amsterdam

Edinburgh

Genoa

TimisoaraGeneva

BernBaselDijon

Tallinn

Essen

Rome

Montpellier

Marseille Sophia

Frankfurt

LondonCambridge

Rotterdam

Antwerp

Brno

Krakow

Warsaw

Gijon

Sevilla

Luxembourg Mainz/Wiesbaden

Kapitan Andreevo

Constanta

Odessa

Kharkiv

Leeds

Malaga

Granada

Thessaloniki

Belgrade

Udine

Poznan

Skopje

Athens

Enschede

Liverpool/Southport

Mannheim

Chisinau

Vilnius

Istanbul

Belfast

Riga

Podgorica

Tirana

Katowice

Kolding

Varna

Drobeta

Turin

Ghent

To Singapore

Houston

Albuquerque

Jackson

Charlotte

Las Vegas

Los Angeles

Pittsburgh

McAllen

Toronto

Salt Lake City

Stamford

Orange County

Minneapolis

OmahaDes Moines

Providence

Detroit

ChicagoToledo

Indianapolis

Tulsa

Dayton

SouthBend

Columbus

Worcester

El Paso

Milwaukee

Birmingham

San FranciscoOakland

Newark

CincinnatiHerndon

Atlanta

Washington

Boston

New York

Dallas

Miami

Tampa

Orlando

Kansas City

Denver

San Diego

Santa Clara

Sacramento

Seattle

Philadelphia

Portland

St. Louis

Montreal

Phoenix

Buffalo

Baltimore

Cleveland

Jacksonville

San Antonio

Albany

Austin

Laredo

Monterrey

Guadalajara

Mexico City

Queretaro

Boise

Colorado Springs

Fort Worth

Oklahoma City Memphis

New Orleans

Hamilton

Louisville

White Plains

Greensboro

Raleigh

Syracuse

Vancouver

Nashville

Richmond

Boca RatonWest Palm Beach

Ottawa

Wilmington

On-Net and Off-Net Market

On-Net and Off-Net Marketwith Cogent Data Center(s)

Network Route

Scheduled Network Route

1-877-875-4432www.cogentco.com

sales@cogentco.com

Corporate Headquarters2450 N Street NW

Washington, DC 20037

About CogentCogent Communications Holdings, Inc. (NASDAQ: CCOI) is a multinational, Tier 1 facilities-based ISP, consistently ranked as one of the top five networks in the world. Cogent specializes in providing businesses with high speed Internet access, Ethernet transport and colocation services. Cogent built one of the largest and highest capacity IP networks in existence. This network enables Cogent to offer large bandwidth connections at highly competitive prices.

Service Locations and ProductsCogent offers a wide variety of service locations, including more than 900 carrier neutral data centers around the world. Cogent also connects the largest and most prestigious office buildings in North America.

Across our global network, we offer a simple product set, allowing us to specialize in providing you bandwidth.

COGENT FACTS• 2017 U.S. Fiber Lit Buildings Challenge Tier (Vertical Systems)

• 2017 U.S. Carrier Ethernet Services Competitive Providers (Vertical Systems)

• 2017 U.S. Carrier Ethernet Services Challenge Tier (Vertical Systems)

• 2017 Global Ethernet Services Challenge Tier (Vertical Systems)

• 2017 Best in Class Service Delivery (Atlantic-ACM)

• Mid-Year 2017 U.S. Carrier Ethernet Services Challenge Tier and Global Provider Ethernet Services Challenge Tier (Vertical Systems)

Did you know?• The Cogent network is directly connected to more than 80% of US broadband eyeballs (LRG)• Cogent is the only commercial ISP to operate one of the 13 DNS root servers of the Internet (C.ROOT)• 50% of the top web properties in the US & Europe are Cogent customers (comScore)• More than 400 Universities & Research Institutions rely on our bandwidth

Atlanta, GABoston, MAChicago, ILDallas, TXDenver, COHerndon, VAHouston, TX

Los Angeles, CAMiami, FLMinneapolis, MNNew Orleans, LANew York, NYOakland, CAPasadena, CA

Philadelphia, PAPhoenix, AZSan Diego, CASan Francisco, CASanta Clara, CASeattle, WASomerville, MA

UNITED STATES OFFICE LOCATIONS

Toronto, ON - CanadaMontreal, QC - CanadaMississauga, ON - CanadaAmsterdam - The NetherlandsFrankfurt - GermanyKiev - Ukraine

INTERNATIONAL OFFICE LOCATIONS

London - United KingdomLuxembourgMadrid - SpainParis - FranceStockholm - Sweden

Sterling, VATroy, MIVienna, VAWashington, DC

EthernetServices

Dedicated Internet Access

UtilityComputingColocation

Call today for information on any

Cogent product.