--- service: i.root-servers.net start-period: '2014-03-29T00:00:00Z' end-period: '2014-03-30T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2640262316 dns-udp-queries-received-ipv6: 172187757 dns-tcp-queries-received-ipv4: 6019111 dns-tcp-queries-received-ipv6: 281340 dns-udp-responses-sent-ipv4: 2582696271 dns-udp-responses-sent-ipv6: 172091049 dns-tcp-responses-sent-ipv4: 5993095 dns-tcp-responses-sent-ipv6: 283181