For example, tracerouting to 36.68.218.127 provides very mixed results.
Traceroute from 192.168.121.126 to 36.68.218.127 (36.68.218.127):
1 192.168.121.1 1.337ms 0.375ms 0.34ms
2 lo0-0.bng4.wh-man.zen.net.uk (51.148.77.131) 5.744ms 4.817ms 4.139ms
3 lag-8.p2.wh-man.zen.net.uk (51.148.73.118) 11.71ms 11.515ms 11.817ms
4 lag-3.p1.thn-lon.zen.net.uk (51.148.73.136) 11.844ms 11.645ms 11.63ms
5 ldn-bb1-link.ip.twelve99.net (62.115.120.74) 12.61ms 12.755ms 12.758ms
6 prs-bb1-link.ip.twelve99.net (62.115.135.25) 19.242ms 18.703ms *
7 mei-b5-link.ip.twelve99.net (62.115.124.55) 28.8ms 28.702ms 28.593ms
8 * prs-bb1-link.ip.twelve99.net (62.115.124.54) 563.155ms *
9 * ldn-bb1-link.ip.twelve99.net (62.115.135.24) 637.818ms *
10 nyk-bb2-link.ip.twelve99.net (62.115.113.20) 364.331ms * *
11 * * *
12 port-b3-link.ip.twelve99.net (62.115.115.25) 1130.258ms 1155.178ms 1149.024ms
13 * tky-b3-link.ip.twelve99.net (62.115.127.11) 1109.197ms *
14 * tky-b2-link.ip.twelve99.net (62.115.126.134) 1498.216ms *
15 * * *
16 * * *
17 * * *
18 180.240.191.166 901.364ms * *
19 * 180.240.204.9 1164.257ms *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
255 * * *