OK, I remain a bit puzzled here at Virgin Media UK’s decisions, but if it works and is stable, then I’m not going to complain… Not that I have much say in the matter, it’s their network and ultimately I can only advise, recommend, and provide information to VM and VM’s customers need to complain.
But to explain why this is weird:
EVE’s destination is 172.65.201.188, which is a part of the 172.65.128.0/17 CIDR range on AS 13335 (which is Cloudflare, Inc.). Discord’s destination is 162.159.137.232, which is a part of the 162.159.128.0/17 CIDR range, which is also on AS 13335.
Given that Virgin Media UK has direct peering with Cloudflare, then it’s weird to route some of the ranges on AS 13335 one way and other ranges another way. But perhaps there is something in the BGP routing here that I am missing.