Out of interest I just did a tracert as you mentioned:
Tracing route to speedtest4.thinkbroadband.com [80.249.107.221]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms routerlogin.net [192.168.0.1]
2 8 ms 8 ms 9 ms 10.11.156.1
3 11 ms 18 ms 9 ms bagu-core-2b-xe-233-0.network.virginmedia.net [62.252.244.69]
4 * * * Request timed out.
5 * * * Request timed out.
6 * * * Request timed out.
7 * * * Request timed out.
8 * * * Request timed out.
9 * * * Request timed out.
10 16 ms 21 ms 25 ms eislou2-ic-2-ae0-0.network.virginmedia.net [62.254.84.62]
11 34 ms 17 ms 16 ms linx-gw2.thdo.ncuk.net [195.66.236.240]
12 15 ms 15 ms 18 ms te2-1-9.star10g.bdr-rt1.thn.ncuk.net [80.249.97.18]
13 17 ms 27 ms 15 ms ip107-221.rbsov.ncuk.net [80.249.107.221]
Trace complete.
PaulKirby (knowledge is power)
Tue 07-Mar-17 18:15:21