We are grateful to Prof. Bruce Maggs (CMU) for his support and
assistance in facilitating measurement experiments on the Akamai
network. We are grateful to Herbie Pearthree, Rance Smith (IBM
Global Services), Jehan Sanmugaraja and Paul Dantzig (IBM
Research), for their assistance in collecting data for the DNS
analysis and discussions regarding the practical usage of route
control and DNS. Our work has greatly benefited from discussions with
Ashwin Bharambe, Dave Maltz, Hui Zhang (CMU), Dave Andersen (MIT) and
Sridhar Machiraju (UC Berkeley). Finally, we thank our shepherd, Carl
Staelin, and our anonymous reviewers for their invaluable feedback on
the presentation of this paper.