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
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: 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: 11
 32097 Unknown 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
Wobscale Technologies
  • Autonomous system (AS) number: 64241
  • Type of AS: Educational/Research
  • Peering policy: Unknown
  • Port speed: 1 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 1
 64241 Unknown Yes
Woofy
  • Autonomous system (AS) number: 396388
  • Type of AS: NSP
  • Peering policy: Unknown
  • Port speed: 1 Gbps
  • Does this member peer at the route server?: No
  • Country of registration: United States of America
  • Total peering locations for this AS: 5
 396388 Unknown No
Wowrack.com
  • Autonomous system (AS) number: 23033
  • Type of AS: Content
  • Peering policy: Unknown
  • Port speed: 40 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 2
 23033 Unknown Yes
X6CNET
  • Autonomous system (AS) number: 46733
  • 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: 7
 46733 Open Yes
Xiber LLC
  • Autonomous system (AS) number: 393950
  • 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: 6
 393950 Unknown Yes
XMission
  • Autonomous system (AS) number: 6315
  • 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: 6
 6315 Unknown Yes
Xplore Inc.
  • Autonomous system (AS) number: 22995
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Open
  • Port speed: 100 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: Canada
  • Total peering locations for this AS: 9
 22995 Open No
Yahoo!
  • Autonomous system (AS) number: 10310
  • Type of AS: Content
  • Peering policy: Selective
  • 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: 90
 10310 Selective Yes
Zayo
  • Autonomous system (AS) number: 6461
  • Type of AS: NSP
  • Peering policy: Restrictive
  • Speed: Unknown
  • Does this member peer at the route server?: No
  • Country of registration: United States of America
  • Total peering locations for this AS: 40
 6461 Restrictive Yes
Zenlayer Inc
  • Autonomous system (AS) number: 21859
  • Type of AS: Content
  • 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: 82
 21859 Selective Yes
Zillow Group
  • Autonomous system (AS) number: 18888
  • Type of AS: Content
  • 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: 1
 18888 Unknown Yes
Ziply Fiber
  • Autonomous system (AS) number: 20055
  • Type of AS: Cable/DSL/ISP
  • Peering policy: Unknown
  • Port speed: 400 Gbps
  • Does this member peer at the route server?: Yes
  • Country of registration: United States of America
  • Total peering locations for this AS: 4
 20055 Unknown Yes
Zito Media
  • Autonomous system (AS) number: 26801
  • Type of AS: Cable/DSL/ISP
  • 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: 8
 26801 Unknown Yes
Zoho
  • Autonomous system (AS) number: 2639
  • Type of AS:
  • 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
 2639 Unknown Yes
Zoho Corp
  • Autonomous system (AS) number: 397849
  • Type of AS: Content
  • 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: 3
 397849 Unknown Yes
Zscaler AS22616
  • Autonomous system (AS) number: 22616
  • Type of AS: Network Services
  • 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: 20
 22616 Open Yes