--- service: i.root-servers.net start-period: '2014-07-14T00:00:00Z' end-period: '2014-07-15T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2992819039 dns-udp-queries-received-ipv6: 197769986 dns-tcp-queries-received-ipv4: 6418424 dns-tcp-queries-received-ipv6: 239427 dns-udp-responses-sent-ipv4: 2946338543 dns-udp-responses-sent-ipv6: 197640687 dns-tcp-responses-sent-ipv4: 6622783 dns-tcp-responses-sent-ipv6: 242600