Traceroute from linodes go through private addresses?

When we run traceroutes from our Linodes, they initially go through private IP addresses before hitting the internet. Does anyone know what these private addresses are?

Here is a partial view of a traceroute I just ran, the first three hops are through private addresses:

1 10.209.1.92 (10.209.1.92) 0.169 ms 0.104 ms 0.136 ms
2 10.209.35.3 (10.209.35.3) 0.257 ms 10.209.35.4 (10.209.35.4) 0.326 ms 10.209.35.3 (10.209.35.3) 0.232 ms
3 10.209.32.1 (10.209.32.1) 0.416 ms 10.209.32.2 (10.209.32.2) 0.205 ms 10.209.32.1 (10.209.32.1) 0.386 ms
4 lo0-0.gw1.sin1.sg.linode.com (139.162.0.101) 0.346 ms lo0-0.gw2.sin1.sg.linode.com (139.162.0.102) 0.454 ms 0.443 ms
5 ae0-100.gw2.sin1.sg.linode.com (139.162.0.18) 0.399 ms 0.620 ms be5545.nr01.b058674-0.sin02.atlas.cogentco.com (204.130.243.9) 1.556 ms
6 be5545.nr01.b058674-0.sin02.atlas.cogentco.com (204.130.243.9) 1.523 ms 1.414 ms 1.387 ms
7 te0-3-1-19.rcr51.sin02.atlas.cogentco.com (154.24.6.49) 0.828 ms 0.852 ms be2270.ccr31.sin01.atlas.cogentco.com (154.54.89.205) 1.204 ms
8 be2919.ccr32.mrs02.atlas.cogentco.com (154.54.87.214) 138.117 ms be2914.ccr31.mrs02.atlas.cogentco.com (154.54.87.210) 143.181 ms be2270.ccr31.sin01.atlas.cogentco.com (154.54.89.205) 1.938 ms
9 be2864.rcr21.mil01.atlas.cogentco.com (154.54.74.166) 151.571 ms be2919.ccr32.mrs02.atlas.cogentco.com (154.54.87.214) 138.347 ms be2864.rcr21.mil01.atlas.cogentco.com (154.54.74.166) 160.326 ms
10 be2864.rcr21.mil01.atlas.cogentco.com (154.54.74.166) 151.535 ms be2865.rcr21.mil01.atlas.cogentco.com (154.54.74.178) 153.635 ms be2864.rcr21.mil01.atlas.cogentco.com (154.54.74.166) 151.532 ms