--- service: i.root-servers.net start-period: '2013-11-22T00:00:00Z' end-period: '2013-11-23T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2211156330 dns-udp-queries-received-ipv6: 130857632 dns-tcp-queries-received-ipv4: 5196022 dns-tcp-queries-received-ipv6: 248562 dns-udp-responses-sent-ipv4: 2292716254 dns-udp-responses-sent-ipv6: 142668984 dns-tcp-responses-sent-ipv4: 5204026 dns-tcp-responses-sent-ipv6: 258194