Don't get too excited if you see indications of Cogent and HE peering with each other on bgp.tools!

This appears to be a interesting BGP AS path manipulation fault ( a mistake I assume )

This appears to be caused by 2a0f:85c1:270::/44, the true path appears to be something like.

AS6939 (HE) -> AS12129 (123.Net, Inc) -> AS13737 (INCX Global) -> AS174 (Cogent) -> AS22439 (Perfect International)

However it would seem that 123.Net has stripped out itself and INCX Global, before leaking a Cogent path to HE. Meaning the path looks like

AS6939 (HE) -> AS174 (Cogent) -> AS22439 (Perfect International)

Weird that HE accepted the route, but noc@he.net have been informed regardless :)