Seattle Internet Exchange (MTU 1500) - SIX Seattle

United States of America

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

About this IXP

Data last updated December 2025

Capacity at this IXP

24,904 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 December 2025

Members of this IXP

370

ASNs (autonomous system numbers) are listed in PeeringDB

In the last 12 months

  • ASNs left28
  • New ASNs joined12

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: December 2025

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: 12
  • Australia: 6
  • Netherlands: 5
View all countries of registration
  • Hong Kong: 4
  • South Korea: 4
  • France: 3
  • New Zealand: 2
  • Singapore: 2
  • Germany: 2
  • Switzerland: 2
  • Philippines: 2
  • Indonesia: 2
  • Japan: 2
  • Israel: 1
  • Taiwan: 1
  • Luxembourg: 1
  • Estonia: 1
  • Belgium: 1
  • Romania: 1
  • Guam: 1
  • South Africa: 1
  • China: 1
  • Czechia: 1
  • Sweden: 1

Types of network at this IXP

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

  • NSP: 102
  • Cable/DSL/ISP: 98
  • Content: 74
  • Unknown: 32
  • Educational/Research: 26
View all network types
  • Enterprise: 15
  • Non-Profit: 11
  • Network Services: 9
  • Government: 2
  • Route Server: 1

Members peering at the route server

264 / 370

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

297 / 370

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 December 2025

Name AS Number Peering policy RPKI Enabled
TierPoint LLC
  • Autonomous system (AS) number: 17378
  • 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: 13
 17378 Open Yes
Tiggee
  • Autonomous system (AS) number: 16552
  • Type of AS: Content
  • 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: 29
 16552 Open Yes
Ting Fiber (Backbone)
  • Autonomous system (AS) number: 32133
  • Type of AS: NSP
  • Peering policy: Unknown
  • 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
 32133 Unknown Yes
T-Mobile USA
  • Autonomous system (AS) number: 21928
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • 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: 11
 21928 Unknown Yes
Total Uptime Technologies
  • Autonomous system (AS) number: 53334
  • Type of AS: NSP
  • Peering policy: Selective
  • 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: 9
 53334 Selective Yes
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
TSS-NET
  • Autonomous system (AS) number: 3657
  • 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: 2
 3657 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: 19
 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 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: 10
 7029 Selective 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
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
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: 72
 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: 11
 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: Unknown
  • Port speed: 1 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: Singapore
  • Total peering locations for this AS: 16
 18106 Unknown 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
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: 2
 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
Webpass
  • Autonomous system (AS) number: 19165
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Open
  • 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: 7
 19165 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