Stuttgarter Internet eXchange, Stuttgart-IX

Germany

City: Stuttgart
Website: http://www.stuttgart-ix.de/

About this IXP

Data last updated November 2025

Capacity at this IXP

1,295 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 Stuttgarter Internet eXchange, Stuttgart-IX as shown in PeeringDB in November 2025

Members of this IXP

ASNs (autonomous system numbers) are listed in PeeringDB

In the last 12 months

ASNs left2
New ASNs joined2

Participates in the MANRS IXP program

Yes

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: November 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.

Germany: 24
United States of America: 5
Austria: 1
United Kingdom: 1
Netherlands: 1

Types of network at this IXP

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

NSP: 11
Cable/DSL/ISP: 9
Content: 4
Educational/Research: 3
Unknown: 1

View all network types

Route Server: 1
Government: 1
Non-Profit: 1
Route Collector: 1

Members peering at the route server

27 / 33

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

28 / 33

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 Stuttgarter Internet eXchange, Stuttgart-IX

This list uses the data available in PeeringDB, which is based on self-reported data, and was last updated in Pulse November 2025

Name	AS Number	Peering policy	RPKI Enabled
Akamai Technologies Autonomous system (AS) number: 20940 Type of AS: Content Peering policy: Open Port speed: 200 Gbps Does this member peer at the route server?: Yes Country of registration: Netherlands Total peering locations for this AS: 230	20940	Open	Yes
ANX Autonomous system (AS) number: 47147 Type of AS: NSP Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Austria Total peering locations for this AS: 8	47147	Unknown	Yes
Aquilius Research GmbH Autonomous system (AS) number: 51492 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: Germany Total peering locations for this AS: 2	51492	Unknown	Yes
BelWü Autonomous system (AS) number: 553 Type of AS: Educational/Research Peering policy: Unknown Port speed: 100 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 5	553	Unknown	Yes
BGP.Tools Route Collector Autonomous system (AS) number: 212232 Type of AS: Route Collector Peering policy: Open Port speed: 1 Gbps Does this member peer at the route server?: Yes Country of registration: United Kingdom Total peering locations for this AS: 123	212232	Open	Yes
Cloudflare Autonomous system (AS) number: 13335 Type of AS: Content 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: 345	13335	Open	Yes
CMO Internet Dienstleistungen Autonomous system (AS) number: 25058 Type of AS: Content Peering policy: Unknown Port speed: 1.024 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 1	25058	Unknown	No
Core-Backbone Autonomous system (AS) number: 33891 Type of AS: NSP Peering policy: Selective Port speed: 100 Gbps Does this member peer at the route server?: No Country of registration: Germany Total peering locations for this AS: 28	33891	Selective	No
Freifunk Stuttgart Autonomous system (AS) number: 208772 Type of AS: Non-Profit Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 2	208772	Unknown	Yes
Globalways Autonomous system (AS) number: 48918 Type of AS: NSP Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: No Country of registration: Germany Total peering locations for this AS: 3	48918	Unknown	Yes
imos Autonomous system (AS) number: 20677 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: Germany Total peering locations for this AS: 2	20677	Unknown	Yes
Inter.link Autonomous system (AS) number: 5405 Type of AS: NSP Peering policy: Selective Port speed: 10 Gbps Does this member peer at the route server?: No Country of registration: Germany Total peering locations for this AS: 21	5405	Selective	Yes
ISP Service eG Autonomous system (AS) number: 198818 Type of AS: NSP Peering policy: Unknown Port speed: 1 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 1	198818	Unknown	Yes
Landeshauptstadt Stuttgart Autonomous system (AS) number: 211651 Type of AS: Government Peering policy: Unknown Port speed: 100 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 1	211651	Unknown	Yes
Meta AS63293 Autonomous system (AS) number: 63293 Type of AS: Content 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: 73	63293	Selective	Yes
Nepustil AS12502 Autonomous system (AS) number: 12502 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: Germany Total peering locations for this AS: 2	12502	Unknown	Yes
Nepustil AS33843 Autonomous system (AS) number: 33843 Type of AS: NSP Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 2	33843	Unknown	Yes
omnidat Autonomous system (AS) number: 202707 Type of AS: Cable/DSL/ISP Peering policy: Unknown Port speed: 1 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 2	202707	Unknown	Yes
PCH AS3856 Autonomous system (AS) number: 3856 Type of AS: Educational/Research 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: 316	3856	Open	Yes
PCH AS42 Autonomous system (AS) number: 42 Type of AS: Educational/Research 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: 322	42	Open	Yes
PLANinterNET GmbH Autonomous system (AS) number: 47138 Type of AS: NSP Peering policy: Unknown Port speed: 1 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 4	47138	Unknown	No
Plusnet GmbH Autonomous system (AS) number: 20676 Type of AS: NSP Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 8	20676	Unknown	Yes
PURtel.com Autonomous system (AS) number: 62336 Type of AS: NSP Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 5	62336	Unknown	Yes
S-IT Informationstechnologie Betreiber GmbH & Co. KG Autonomous system (AS) number: 39702 Type of AS: NSP Peering policy: Unknown Port speed: 10 Gbps Does this member peer at the route server?: Yes Country of registration: Germany Total peering locations for this AS: 8	39702	Unknown	Yes
Stadtwerke Konstanz Autonomous system (AS) number: 57154 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: Germany Total peering locations for this AS: 4	57154	Unknown	Yes
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