--- service: i.root-servers.net start-period: '2014-01-24T00:00:00Z' end-period: '2014-01-25T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2492334442 dns-udp-queries-received-ipv6: 157130202 dns-tcp-queries-received-ipv4: 5226822 dns-tcp-queries-received-ipv6: 241385 dns-udp-responses-sent-ipv4: 2438107575 dns-udp-responses-sent-ipv6: 156687547 dns-tcp-responses-sent-ipv4: 5226142 dns-tcp-responses-sent-ipv6: 244594