October 2005

1
Unleash the Potential of the Internet
October 2005
Forname Surname Tel XX XXX XXXX XXXX Mob XX
XXX XXXX XXXX Email Fsurname_at_cogentco.com
Cogent Communications Country Address Tel
XX XXX XXXX XXXX ZIP City Fax XX XXX XXXX
XXXX www.cogentco.com/Country Email
Country-info_at_cogentco.com
2
Who is Cogent ?
Cogent is a Top 10 Global Internet Service
Provider

• Founded in 1999 in Washington, DC Operates now
  in 12 countries 300 employees Publicly traded
  company (AMEX COI)
• Cogent provides Internet Access, Ethernet
  Transport and Colocation services to over 9,400
  NetCentric (bandwidth-intensive users) and
  Corporate customers worldwide
• Cogent operates a 50,000 km all-optical IP
  network in over 85 markets in Europe and North
  America
• Independent third parties rank Cogent as one of
  the leading ISP in the world

• The 6th largest Autonomous System (CAIDA)
• The 6th largest ISP by AS connectivity
  (Telegeography)
• The 6th largest number of peers (Fixed Orbit)
• The 6th largest IP space control (Fixed
  Orbit)
• The largest Ethernet provider in U.S. (Ovum-RHK)

Cogents vision is Make very high speed quality
service affordable to Internet Professionals and
Corporate users Brilliantly Fast Elegantly
Simple Competitively Priced
3
Our Milestones
Cogents Success Story combines Organic Growth
and Acquisition-based External Growth
January 2004 France Spain markets launch
February 2002 COI listed on AMEX
August 2004 Launches U.S. Layer 2 services
April 2002 Offers Off-Net Internet service
colocation
September 2004 Germany market launch
November 2001 20th U.S. market complete
August 1999 Cogent founded
October 2004 Offer wholesale dial IP services
July 2005 Cogent named largest Ethernet service
provider in U.S. by Ovum-RHK
November 2002 Toronto market launch
November 2004 Launches managed security service
November 2000 Backbone lit in initial 4 markets
Milestones
1999
2001
2002
2003
2004
2005
2000
September 2001 Acquires assets of NetRail
April 2002 Acquires major U.S. assets of PSINet
June 2005 Cogent raises 69 million in secondary
offering
Acquisitions
February 2003 Acquires Fiber Network Solutions
January 2004 Acquires LambdaNet France Spain
February 2002 Acquires Allied Riser
May 2003 Acquires assets of Applied Theory
March 2004 Acquire fiber network equipment
in Germany out of former Carrier 1 assets
April 2002 Acquires building access
agreements from OnSite Access
September 2002 Acquires major assets of
FiberCity Networks
August 2004 Acquires UFO
September 2004 Acquires Global Access
Since 2001, Cogent acquired the entire business
or select assets of 13 companies, including 3 in
Europe.
October 2004 Acquires Aleron Broadband
December 2004 Acquires NTT/Verio dedicated
access business in U.S.
4
Our Network
One of the Worlds Largest All-Optical IP Network
Inter-Continental
Pervasive
5
Our Products Dedicated Internet Access

• Features / Technical Characteristics
• Single world-wide Tier-1 AS 174
• BGP or Static Routing Configuration
• Interfaces
• Ethernet FastE or GigE
• PDH/SDH/SONET E1/T1, E3/DS3, STM-N/OC-X
• Flat or usage-based billing options
• Options
• Primary / Secondary DNS
• Black Hole Server
• Back-Up Mail Server
• Full SLA
• Network availability 99.99
• Packet loss lt 0.1
• Latency lt 50 ms intra-continent lt 85 ms
  transatlantic
• Proactive outage notification within 15 minutes
• Rapid Installation
• On-Net 17 days or less
• Off-Net Depending on Local Tail provider

Dedicated Internet Access IP Transit

• Applications
• Netcentric Customers (ISPs / Content
  Providers)Deliver quality content to end-users,
  guarantee low ping times and high transfer rates
  for all types of Internet usage, from fractional
  FastE to multiple GigE configurations
• Corporate CustomersGain high-speed fully
  dedicated quality Internet access, in Data
  Centers as a complement of your world-wide WAN
  solution or directly at your office premises
• Delivery
• On-NetDelivery in one of Cogents gt 1000 On-Net
  buildings
• 28 Cogent Data Centers
• gt 200 Carrier Neutral Data Centers
• gt 800 Corporate Buildings
• Off-NetDelivery at Customer Premises

6
Our Products Ethernet Point-to-Point

• Features / Technical Characteristics
• Native Layer-2 Ethernet over WDM
• Reach and Port Based Billing
• National
• International
• Transatlantic
• Per port (rather than per link) bandwidth
  assignment
• VLAN-based Connectivity
• Flexible assignment of VLAN between ports
• VLAN tagging acc. to IEEE 802.1q
• MTU size 1,500 bytes (Q-in-Q optional)
• Interfaces
• Ethernet FastE or GigE
• Full SLA
• Network availability 99.99
• Packet loss lt 0.1
• Rapid Installation
• On-Net 17 days or less
• Off-Net Depending on Local Tail provider

Ethernet Point-to-Point Layer 2 Transport

• Applications
• Netcentric Customers (ISPs / Content
  Providers)Interconnect distant network
  locations, Remote access to public peering
  points, Guaranteed high-speed throughput
• Corporate CustomersPrivate and secure full
  speed LAN-to-LAN extension, Enabler for bandwidth
  intensive distributed applications, Remote
  storage or Disaster Recovery
• Available TopologiesPoint-to-Point,
  Point-to-Multipoint, Meshed Network
• Delivery
• On-NetDelivery in one of Cogents gt 1000 On-Net
  buildings
• 28 Cogent Data Centers
• gt 200 Carrier Neutral Data Centers
• gt 800 Corporate Buildings
• Off-NetDelivery at Customer Premises

7
Our Products Colocation

• Features / Technical Characteristics
• Configurations
• Stand-Alone Footprint / Rack or Cage / Suite
• Bundle with Internet or Ethernet connectivity
• Fully Redundant Power Supply
• AC (110 / 230V) or DC (48V)
• Redundant UPS
• Battery Back-Up
• On-Site Diesel Generators
• Fire Detection and Suppression Systems
• Above and below floor smoke heads
• Central monitoring
• Inert gas tanks (FM 200)
• Air Conditioning
• Temperature and Humidity Control
• Access Control
• Intercom and Keycard systems
• Helping Hands Option (select locations)
• Rapid Installation

Colocation Over 30,000 m²

• Applications
• Netcentric Customers (ISPs / Content
  Providers)Host telecommunications equipment (DC
  or AC powered) and IT devices (servers,
  mainframes) in a secure and state-of-the-art data
  center environment, right in the heart of the
  Internet
• Corporate CustomersHouse your mission-critical
  IT environment (applications servers, mainframes,
  storage devices) in a highly secure and perfectly
  connected data center environment
• Delivery
• In one of Cogents 28 Data Centers

North America Herndon, VA New York, NY Los
Angeles (Marina del Rey), CA Chicago, IL Atlanta,
GA Columbus, OH Detroit (Troy), MI Pittsburgh,
PA Milwaukee, WI
Europe Germany France Paris (2 locations) Lille Na
ntes Toulouse Grenoble Nice / Sophia-Antipolis Mon
tpellier
Frankfurt Strasbourg Bordeaux Rouen Rennes Reims
Tours Poitiers