Interconnection

AS39533 Asympto Networks Kft.

Unclassified RIPE NSP

Exchanges 17 17 active

Countries 7 most in Germany

Regions 2

Largest fabric 1,242 4b42 Internet Exchange Point

Recorded presence

Internet exchanges

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS39533, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's page, with its peering LANs and everyone else on it.

Europe 14 North America 3

Exchange	Location	Their address	Policy	Member ports
4b42 Internet Exchange Point	Zurich, Switzerland	185.1.125.133	Open	1,242
DE-CIX Frankfurt	Frankfurt, Germany	2001:7f8::9a6d:0:1	—	1,078
France-IX Paris	Paris, France	37.49.237.228	Open	570
DE-CIX New York	New York, United States	2001:504:36::9a6d:0:1	—	285
DE-CIX Dusseldorf	Düsseldorf, Germany	2001:7f8:9e::9a6d:0:1	—	228
DE-CIX Madrid	Madrid, Spain	2001:7f8:a0::9a6d:0:1	—	227
DE-CIX Munich	Munich, Germany	2001:7f8:44::9a6d:0:1	—	211
DE-CIX Hamburg	Hamburg, Germany	185.1.210.121	—	196
Securebit Internet Exchange Zurich	Zurich, Switzerland	185.1.135.18	Open	156
Berlin Commercial Internet Exchange	Berlin, Germany	193.178.185.129	—	153
DE-CIX Marseille	Marseille, France	2001:7f8:36::9a6d:0:1	—	112
CH Swiss Internet Exchange	Zurich, Switzerland	185.1.59.149	Open	111
Massachusetts Internet Exchange	Boston, United States	206.53.143.70	Open	73
DE-CIX Istanbul	Istanbul, Turkey	2001:7f8:3f::9a6d:0:2	—	69
DE-CIX Lisbon	Lisbon, Portugal	2001:7f8:d5::9a6d:0:2	—	62
LINX NoVa	Reston, United States	206.55.196.102	Open	48
Community-IX.ch	Zurich, Switzerland	185.1.105.12	—	24

Recorded rather than inferred: an address on a peering LAN is at that exchange by definition. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. An absent exchange means PCH has no record of it, not that the network is not there. For the operator's own claims, see its PeeringDB record.

From the exchange directory collected 2026-10-16 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,346 exchanges and 97,671 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.