Dear community,
We would like to inform you of an update to the publication schedule of
the .CH and .LI TLD zone data.
To support faster recovery from technical misconfigurations (e.g.,
DNSSEC key rollovers or nameserver changes), the zone publication
frequency has been increased as follows:
Previous: Once per hour, at the full hour (:00)
New: Every 30 minutes, at :00 and :30
This change has been rolled out today and is now in effect.
In addition, dynamic delegation TTL adjustments have been in place since
18 November 2025 to further improve recovery times. When delegation
information (NS or DS records) is created or updated - including new
registrations and delegation changes - the delegation TTL is temporarily
reduced from the default of 1 hour to 15 minutes for a period of 12
hours. This enables corrected delegation configurations to propagate
more quickly.
If you have any questions, feel free to reach out.
Kind regards,
Daniel
--
Daniel Stirnimann, Switch CERT
Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland
phone +41 44 268 15 15, direct +41 44 268 16 24
https://switch.chhttps://swit.ch/linkedin
