4b42.com: PeeringDB fix list
AS61218 · peeringdb.com/net/21080
3 things to fix in 4b42.com's PeeringDB record, from what its exchanges publish: 1 to add, 1 to correct, 1 to check. As of 2026-10-08 20:58 UTC.
Make the changes on 4b42.com's PeeringDB page: sign in, choose Edit, and find the exchanges under Public Peering Exchange Points. Speeds go in as megabits per second.
Add these exchanges (1)
On the exchange's own member list, but not in 4b42.com's PeeringDB record. Add one entry per connection with these values.
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4b42 Internet Exchange Point Zurich, Switzerland · PeeringDB 2447From its IX-F export and website members list2 connections, so 2 entries:
IPv4 185.1.125.9 IPv6 2001:7f8:d0::ad69:1 Speed Not published RS peer Yes IPv4 – IPv6 2001:7f8:d0::ef22:1 Speed Not published RS peer Yes
Correct these entries (1)
Addresses or port speeds in PeeringDB that differ from the exchange's IX-F export. The changes below follow the export; if the export is the one that's wrong, tell the exchange instead.
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Problem PeeringDB has The export has Port speed differs 1G 10G - In the entry with IPv4 185.1.208.126: set Speed to 10000 (10G) (now 1000).
Check these entries (1)
In PeeringDB, but on none of the exchange's own lists. If 4b42.com has left, delete the entry; if it's still connected, the exchange's list is wrong: ask the exchange to fix it.
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DE-CIX Dusseldorf Düsseldorf, Germany · PeeringDB 1214Not on its IX-F export or website members listIPv4 185.1.170.90 IPv6 2001:7f8:9e::ef22:0:1 Speed 1000 Mbps (1G)
From ixreport.com/net/61218/: PeeringDB against each exchange's IX-F export and website members list. Exchanges whose lists couldn't be read on this update aren't included.