Greetings! Actually, what you have provided below shows the exact opposite. It shows ColoAU have received the route from 4637 who have received it from 3257 who have received it from 29909 who have received it from 16532 who originated it. It infers nothing about who 16532 found the route to come from. It is evident that GTT are advertising that route to Telstra Global :) Regards, Nik.
And I'm pretty sure AS3257 (GTT ) is in the same boat as us, as they're not the one advertising those routes to AS4637
AS16532 found it to come from AS4637 as you can see from this ColoAU LG output below
----- https://lg.coloau.com.au/
vrf-international.inet.0: 696533 destinations, 2248101 routes (696249 active, 0 holddown, 103835 hidden) + = Active Route, - = Last Active, * = Both
18.29.238.0/23 *[BGP/170] 1d 19:57:28, localpref 90, from 103.97.52.2 AS path: 4637 3257 29909 16532 16532 16532 16532 I, validation-state: unverified
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