Use the traceroute utility and check the code of the last switch from the DNS.
Example:
$ traceroute to indsrv1.apac.nokia.com (172.30.176.23), 30 hops max, 38 byte packets
1 v21-sr-silabgw (172.21.134.1) 0.397 ms 0.338 ms 0.476 ms
2 hi3-coregw1 (172.21.1.41) 0.487 ms 0.411 ms 0.476 ms
3 hi3-atmgw1 (172.21.120.1) 0.571 ms 0.431 ms 0.476 ms
4 sat-atm-gw1.nokia.com (131.228.197.111) 0.690 ms 0.912 ms 0.706 ms
5 essapo-manbbrtr01.europe.nokia.com (172.21.254.2) 0.526 ms 0.590 ms 0.593 ms
6 essapo-fincorertr02.nokia.com (131.228.5.3) 1.643 ms 1.780 ms 1.114 ms
7 essapo-bbrtr01.nokia.com (131.228.0.10) 0.876 ms 0.719 ms 0.852 ms
8 daec-bbrtr01.nokia.com (192.100.119.77) 165.017 ms 165.005 ms 165.408 ms
9 sitech-atmbbrtr02.nokia.com (192.100.119.210) 407.246 ms 402.908 ms 403.841 ms
10 si-rtr02.apac.nokia.com (172.16.8.2) 1791.441 ms 416.096 ms 435.899 ms
11 bh-rtr02.apac.nokia.com (192.100.103.122) 474.380 ms 489.348 ms 544.230 ms
12 indsrv1.apac.nokia.com (172.30.176.23) 492.822 ms 595.887 ms 474.220 ms
BH is Bangalore, India