San Francisco Metropolitan Internet Exchange - SFMIX

United States of America

City: San Francisco
Website: https://sfmix.org/

About this IXP

Data last updated December 2025

Capacity at this IXP

3,451 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 San Francisco Metropolitan Internet Exchange - SFMIX as shown in PeeringDB in December 2025

Members of this IXP

ASNs (autonomous system numbers) are listed in PeeringDB

In the last 12 months

ASNs left11
New ASNs joined1

Participates in the MANRS IXP program

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

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: 68
United Kingdom: 3
Canada: 3
Singapore: 3
Japan: 2

View all countries of registration

Australia: 2
Netherlands: 2
China: 1
Lithuania: 1
Switzerland: 1
New Zealand: 1
Portugal: 1
Sweden: 1
France: 1
Hong Kong: 1

Types of network at this IXP

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

Content: 29
Cable/DSL/ISP: 20
NSP: 17
Enterprise: 7
Non-Profit: 7

View all network types

Unknown: 5
Network Services: 3
Educational/Research: 3

Members peering at the route server

70 / 91

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

79 / 91

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 San Francisco Metropolitan Internet Exchange - SFMIX

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
Fortinet Autonomous system (AS) number: 40934 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: 27	40934	Unknown	Yes
Google LLC Autonomous system (AS) number: 15169 Type of AS: Content Peering policy: Selective Port speed: 200 Gbps Does this member peer at the route server?: No Country of registration: United States of America Total peering locations for this AS: 197	15169	Selective	Yes
HAPPYCYCLING Autonomous system (AS) number: 397554 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	397554	Unknown	Yes
High Desert Internet Services Autonomous system (AS) number: 32614 Type of AS: Cable/DSL/ISP 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: 2	32614	Unknown	No
Hurricane Electric Autonomous system (AS) number: 6939 Type of AS: NSP Peering policy: Unknown 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: 323	6939	Unknown	Yes
i3D.net Autonomous system (AS) number: 49544 Type of AS: NSP Peering policy: Selective Port speed: 10 Gbps Does this member peer at the route server?: No Country of registration: Netherlands Total peering locations for this AS: 99	49544	Selective	Yes
Internet Archive Autonomous system (AS) number: 7941 Type of AS: Non-Profit 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: 1	7941	Unknown	No
ISC F-ROOT OAK1 Autonomous system (AS) number: 27321 Type of AS: 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: 4	27321	Unknown	Yes
IT7 Networks Autonomous system (AS) number: 25820 Type of AS: Content Peering policy: Selective Port speed: 10 Gbps Does this member peer at the route server?: No Country of registration: Canada Total peering locations for this AS: 8	25820	Selective	Yes
Kerfuffle Autonomous system (AS) number: 35008 Type of AS: Content 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: 4	35008	Unknown	Yes
KPFA Autonomous system (AS) number: 397715 Type of AS: Non-Profit 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: 2	397715	Unknown	Yes
Linode AS63949 Autonomous system (AS) number: 63949 Type of AS: Content Peering policy: Unknown Port speed: 100 Gbps Does this member peer at the route server?: Yes Country of registration: Singapore Total peering locations for this AS: 25	63949	Unknown	Yes
Lookout Autonomous system (AS) number: 26918 Type of AS: Content 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: 1	26918	Unknown	No
Madrone Technology Group Inc. Autonomous system (AS) number: 397945 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: 2	397945	Unknown	Yes
Meta Autonomous system (AS) number: 32934 Type of AS: Content Peering policy: Selective Port speed: 200 Gbps Does this member peer at the route server?: No Country of registration: United States of America Total peering locations for this AS: 199	32934	Selective	Yes
Monkeybrains Autonomous system (AS) number: 32329 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: 1	32329	Unknown	Yes
Moscone Center Autonomous system (AS) number: 36210 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: 1	36210	Unknown	Yes
M-ROOT DNS Server Autonomous system (AS) number: 7500 Type of AS: Non-Profit Peering policy: Open Port speed: 1 Gbps Does this member peer at the route server?: Yes Country of registration: Japan Total peering locations for this AS: 35	7500	Open	Yes
Mythic Beasts USA Autonomous system (AS) number: 60011 Type of AS: Content Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: United Kingdom Total peering locations for this AS: 2	60011	Unknown	Yes
Nato Internet Service Autonomous system (AS) number: 46997 Type of AS: 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	46997	Unknown	Yes
NetActuate Autonomous system (AS) number: 36236 Type of AS: Cable/DSL/ISP Peering policy: Open Speed: Unknown Does this member peer at the route server?: Yes Country of registration: United States of America Total peering locations for this AS: 52	36236	Open	Yes
Netflix Autonomous system (AS) number: 2906 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: 107	2906	Open	Yes
NetFortris Autonomous system (AS) number: 32035 Type of AS: Cable/DSL/ISP 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: 19	32035	Open	Yes
Netnod Autonomous system (AS) number: 8674 Type of AS: Non-Profit Peering policy: Open Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Sweden Total peering locations for this AS: 95	8674	Open	Yes
Netskope Autonomous system (AS) number: 55256 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: 135	55256	Open	Yes
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