Any issues with AS 19548 and their links to Level 3 or TWTC?

["David Hubbard" <dhubbard () dino hostasaurus com>]

Having some connectivity issues with multiple
customers on that network from our AS and a few
others I've found on traceroute.org; is anyone
aware of anything there?  Traces in, but which
are more likely failing on the return side,
often stop at ae-1-0.c1.dfw91.twc-core.net and
paix-atl.adelphiacom.net.  I've been unsuccessful
trying to make them prefer a different inbound
route to us.

Thanks,

David