--- service: i.root-servers.net start-period: '2013-06-22T00:00:00Z' end-period: '2013-06-23T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1615697305 dns-udp-queries-received-ipv6: 91928330 dns-tcp-queries-received-ipv4: 3017129 dns-tcp-queries-received-ipv6: 148712 dns-udp-responses-sent-ipv4: 1628335319 dns-udp-responses-sent-ipv6: 97977709 dns-tcp-responses-sent-ipv4: 3144589 dns-tcp-responses-sent-ipv6: 152379