--- service: i.root-servers.net start-period: '2014-04-05T00:00:00Z' end-period: '2014-04-06T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2511221466 dns-udp-queries-received-ipv6: 167819739 dns-tcp-queries-received-ipv4: 5616581 dns-tcp-queries-received-ipv6: 256097 dns-udp-responses-sent-ipv4: 2455142276 dns-udp-responses-sent-ipv6: 168053242 dns-tcp-responses-sent-ipv4: 5565955 dns-tcp-responses-sent-ipv6: 257229