The same situation seems to prevail when trying to add servers from Germany originating in Networks like Unitymedia, Vodafone or Deutsche Telekom. Trying to add 126.96.36.199, I also get ca. 90 % of port 123 UDP packets blocked by Telia:
9.|-- nyk-bb2-link.telia.net 90.0% 10 109.4 109.4 109.4 109.4 0.0
I wonder if this is a mistake or a purposeful action to prevent DDoS attacs by either Telia or the local WAN provider.
Without any contractual relationship to Telia, this seems to imply practically, that one is unable to contribute to ntp by joining the network in such situation, correct? Against my real intention, I will therefore delete the IP.