Cogent Communications

AS174
Tier 1 Carrier/ISPTransit-Freewww.cogentco.com→

Cogent Communications operates one of the largest Tier 1 IP backbone networks globally, with over 1,000 carrier-neutral data center interconnections across North America, Europe, and Asia. Founded in 1999 and headquartered in Washington, D.C., Cogent provides IP transit, dedicated internet access, and optical wavelength services primarily to enterprise, carrier, and content customers.

Overview written: 03/26/2026
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Routing & Connectivity
AS Cone Rank#3
Known Peers6,632
Prefixes v43,938
Prefixes v6451
IX Presence1+IXPs
RPKI ROVenabled
Avg Path Length2.8
Source: bgp.toolsbgp.tools verified 10/11/2026Avg path length from RouteViews (CC-BY 4.0, updated nightly)View live data on bgp.tools →
Operational Capabilities
BGP Communities
Granular
local preference, prepend
Flowspec
Not supported
RTBH
Supported
IPv6
Native dual-stack
Port Sizes
100M – 100G
Commit Model
Flat-rate and burstable (95th percentile)
Source: Carrier documentationCarrier-sourcedVerified 04/04/2026View BGP communities on bgp.tools →
Content Provider Reach
10 providers tracked
Google
AS15169
Direct peer
Amazon/AWS
AS16509
Direct peer
Microsoft/Azure
AS8075
Direct peer
Meta
AS32934
Direct peer
Cloudflare
AS13335
Direct peer
Source: bgp.tools adjacency dataAdjacency only — no quality assessmentVerified 10/04/2026View all peers on bgp.tools →
Routing Governance
RPKI ROA Coverage
~10%
of originated prefixes have valid ROAs
RPKI Route Origin Validation
enabled
Rejects RPKI-invalid routes
IRR Records
RADB
~1,914 route objects registered
DDoS Mitigation
Basic (RTBH only, no scrubbing service)
RPKI: bgp.toolsIRR: IRR ExplorerVerified 04/02/2026
Facility Presence

Building-level presence for Cogent Communications isn’t mapped on Peerfloor yet.

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Verify This Data
bgp.tools
Live routing metrics, communities, RPKI
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PeeringDB
Peering policy, facilities, NOC contacts
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CAIDA AS Rank
Customer cone, provider/peer relationships
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RIPEstat
Routing history, BGP updates, path analysis
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bgp.he.net
Prefix list, peers, IX participation, IRR
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IRR Explorer
IRR objects, RPKI comparison, origin validation
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Cogent Communications Looking Glass
Live route lookup from Cogent Communications’s routers
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Cogent Communications Website
Product pages, SLA terms, BGP community docs
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Operator Reviews

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Reviews cover 7 dimensions: Provisioning, Performance, NOC Support, BGP Quality, Billing, Contracts, Account Management.

Community Intelligence
Operator experiences, peering dynamics, and discussion threads about Cogent Communications— contributed by the community
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