DNS leak test providing unexpected results (OpenDNS)

Results from a DNS Leak test site ran from 192.168.1.233

146.112.137.64 r1.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.65 r2.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.66 r3.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.67 r4.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.68 r5.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.69 r6.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.70 r7.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.71 r8.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.72 r9.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States
146.112.137.73 r10.compute.atl1.edc.strln.net. Cisco OpenDNS, LLC Atlanta, United States