Hello!
I've noticed that the IPv6 networks from AS22394 don't show up in the AS3320 routing table.
The result is that customers of Verizon can't communicate with customers of DTAG AS3320, a big German ISP and Tier-1.
You can check that on lg.telekom.com.
E.g. 2600:1010::/29 is affected.
Please investigate that or forward it to the network department.
kind regards
Marco