db:/# tcptraceroute mx1.hotmail.com 25
Tracing the path to mx1.hotmail.com (64.4.50.50) on TCP port 25 (smtp), 30 hops max
1 fw.infometrics.co.nz (210.48.109.90) 0.326 ms 0.450 ms 0.399 ms
2 iconz-pt.wix.net.nz (202.7.1.5) 1.145 ms 1.030 ms 1.030 ms
3 f0-0.hsrp1.core1.wlg.iconz.net.nz (210.48.3.254) 1.675 ms 1.517 ms 1.275 ms
4 fe-0-0-1.air01-jcore.iconz.net (210.48.5.17) 13.275 ms 12.970 ms 12.818 ms
5 fe-3-48.cat01-air.iconz.net (210.48.5.26) 13.458 ms 12.498 ms 14.063 ms
6 vl17.cat02-air.iconz.net (210.48.17.252) 18.078 ms 13.705 ms 13.530 ms
7 fe-0-0.sl-br-air.iconz.net (210.48.5.45) 14.204 ms 15.224 ms 17.059 ms
8 sl-gw1-auk-6-0-1.sprintlink.net (203.222.35.197) 13.834 ms 13.724 ms 14.315 ms
9 sl-bb21-syd-1-1.sprintlink.net (203.222.33.22) 38.071 ms 37.748 ms 40.794 ms
10 sl-bb21-syd-15-1.sprintlink.net (203.222.32.34) 38.549 ms 38.178 ms 41.251 ms
11 sl-bb21-sj-3-2.sprintlink.net (144.232.8.130) 187.159 ms 187.726 ms 188.408 ms
12 sl-st20-sj-13-0.sprintlink.net (144.232.9.58) 187.783 ms 189.071 ms 188.404 ms
13 * * *
14 * * *
15 * * *