AS398565 tags routes with the following BGP large communities:

Community identifier Meaning
(398565, 1, x) Announcement to internet exchange
x: 10=EVIX
(398565, 1xx, y) Announcement from server
xx: 05=apps-vm5; 06=apps-vm6
y: 0 if native BGP, positive number indicates that this is announced from a tunnel and represents the round-trip latency (in milliseconds) of the tunnel.