Seattle Internet Exchange (MTU 1500) - SIX Seattle

United States of America

City
Seattle
Website
https://www.seattleix.net/

About this IXP

Data last updated May 2026

Capacity at this IXP

28,265 Gbps

Cumulative port speeds of all IXP members. This shows the potential maximum traffic that can be exchanged at this IXP at one time.

Membership and capacity

The size and strength of an IXP is determined by a combination of how many members it has, and the total capacity. Larger networks tend to bring more capacity, which can benefit all members.

Data for Seattle Internet Exchange (MTU 1500) - SIX Seattle as shown in PeeringDB in May 2026

Members of this IXP

371

ASNs (autonomous system numbers) are listed in PeeringDB

In the last 12 months

  • ASNs left22
  • New ASNs joined23

Participates in the MANRS IXP program

No

IXPs that join this voluntary program apply a framework of enhanced routing security in peering. It signals an extra commitment to responsible Internet stewardship.

Source: MANRS

RIPE Atlas anchor

No

Organizations that run IXPs can host anchors to measure Internet connectivity and traffic. An anchor is a large capacity probe often used by IXPs.

Source: RIPEStat

Member information

Last sync from PeeringDB: May 2026

View this IXP on PeeringDB

Countries of registration

A summary of member registrations by country. An IXP with a mixture of international and near-neighbor members can indicate that an IXP is influential, or acts as a hub within its region or sub-region.

  • United States of America: 275
  • Canada: 36
  • United Kingdom: 9
  • Australia: 6
  • Hong Kong: 5
View all countries of registration
  • Netherlands: 5
  • South Korea: 4
  • France: 3
  • Singapore: 3
  • Indonesia: 2
  • Switzerland: 2
  • New Zealand: 2
  • Germany: 2
  • Japan: 2
  • Philippines: 2
  • Luxembourg: 1
  • Isle of Man: 1
  • South Africa: 1
  • Israel: 1
  • Saudi Arabia: 1
  • Belgium: 1
  • Estonia: 1
  • Guam: 1
  • China: 1
  • Czechia: 1
  • Sweden: 1
  • Seychelles: 1
  • Taiwan: 1

Types of network at this IXP

The mix of members is an indication of a strength or focus of an IXP.

  • NSP: 106
  • Cable/DSL/ISP: 98
  • Content: 71
  • Unknown: 32
  • Educational/Research: 25
View all network types
  • Enterprise: 16
  • Non-Profit: 11
  • Network Services: 9
  • Government: 2
  • Route Server: 1

Members peering at the route server

266 / 371

The route server is a central hub that makes it easier for all networks to peer without having to create individual agreements with other members.

Members using RPKI

301 / 371

members at this IXP use Resource Public Key Infrastructure (RPKI), a security measure that helps ensure traffic is routed correctly. A member is counted as using RPKI if they have at least one valid ROA.

Peering policies of IXP members

Members of an IXP can choose how they peer with others. The Internet Society encourages open policies where possible.

Member list for Seattle Internet Exchange (MTU 1500) - SIX Seattle

This list uses the data available in PeeringDB, which is based on self-reported data, and was last updated in Pulse May 2026

Name AS Number Peering policy RPKI Enabled
Tritan Internet LLC (Global)
  • Autonomous system (AS) number: 393577
  • Type of AS: NSP
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 7
 393577 Unknown Yes
Twitter, Inc.
  • Autonomous system (AS) number: 13414
  • Type of AS: Content
  • Peering policy: Selective
  • Port speed: 20 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 17
 13414 Selective Yes
UCAID
  • Autonomous system (AS) number: 11537
  • Type of AS: Educational/Research
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: No
  • Country of registration: United States of America
  • Total peering locations for this AS: 2
 11537 Unknown No
US Internet
  • Autonomous system (AS) number: 10242
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 9
 10242 Unknown Yes
Uniserve Communications Corp
  • Autonomous system (AS) number: 19662
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: Canada
  • Total peering locations for this AS: 3
 19662 Unknown No
Unitas Global
  • Autonomous system (AS) number: 1828
  • Type of AS: NSP
  • Peering policy: Selective
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 46
 1828 Selective Yes
Uniti Kinetic
  • Autonomous system (AS) number: 7029
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Selective
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: No
  • Country of registration: United States of America
  • Total peering locations for this AS: 13
 7029 Selective Yes
Unredacted Inc (NoiseNet)
  • Autonomous system (AS) number: 401401
  • Type of AS: NSP
  • Peering policy: Open
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 8
 401401 Open Yes
Urban Networks Inc
  • Autonomous system (AS) number: 6391
  • Type of AS: NSP
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: Canada
  • Total peering locations for this AS: 2
 6391 Unknown Yes
Valve Corporation
  • Autonomous system (AS) number: 32590
  • Type of AS: Content
  • Peering policy: Open
  • Port speed: 700 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 75
 32590 Open Yes
Verisign
  • Autonomous system (AS) number: 7342
  • Type of AS: NSP
  • Peering policy: Open
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 12
 7342 Open Yes
Verus Corporation, Inc.
  • Autonomous system (AS) number: 26156
  • Type of AS: Enterprise
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 6
 26156 Unknown Yes
ViaSat
  • Autonomous system (AS) number: 7155
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 8
 7155 Unknown Yes
ViewQwest
  • Autonomous system (AS) number: 18106
  • Type of AS: NSP
  • Peering policy: Open
  • Port speed: 2 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: Singapore
  • Total peering locations for this AS: 16
 18106 Open Yes
Vision Net AS8057
  • Autonomous system (AS) number: 8057
  • Type of AS: Network Services
  • Peering policy: Unknown
  • Port speed: 40 Gbps
  • Does this member peer at the route server?: No
  • Country of registration: United States of America
  • Total peering locations for this AS: 1
 8057 Unknown No
VoIPster Communications
  • Autonomous system (AS) number: 32030
  • Type of AS: NSP
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 5
 32030 Unknown Yes
Voltage Park
  • Autonomous system (AS) number: 46082
  • Type of AS:
  • Peering policy: Open
  • Port speed: 800 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 1
 46082 Open Yes
Washington Broadband
  • Autonomous system (AS) number: 19116
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 1
 19116 Unknown Yes
Wave Division Holdings
  • Autonomous system (AS) number: 11404
  • Type of AS: NSP
  • Peering policy: Open
  • Port speed: 200 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 5
 11404 Open Yes
Web of Nevada
  • Autonomous system (AS) number: 32943
  • Type of AS: Content
  • Peering policy: Open
  • Port speed: 10 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 2
 32943 Open Yes
Whidbey Telephone Company
  • Autonomous system (AS) number: 3853
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 30 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 1
 3853 Unknown No
Whitesky Communications AS62887
  • Autonomous system (AS) number: 62887
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 20 Gbps
  • Does this member peer at the route server?: No
  • Country of registration: United States of America
  • Total peering locations for this AS: 19
 62887 Unknown No
Wholesale Internet, Inc.
  • Autonomous system (AS) number: 32097
  • Type of AS: NSP
  • Peering policy: Open
  • Port speed: 20 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 10
 32097 Open Yes
Wikstrom Telephone Company
  • Autonomous system (AS) number: 33362
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 4
 33362 Unknown Yes
WindWave Communications
  • Autonomous system (AS) number: 36222
  • Type of AS: NSP
  • Peering policy: Unknown
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 3
 36222 Unknown Yes