--- service: i.root-servers.net start-period: '2015-12-26T00:00:00Z' end-period: '2015-12-27T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4154770633 dns-udp-queries-received-ipv6: 320151645 dns-tcp-queries-received-ipv4: 32777153 dns-tcp-queries-received-ipv6: 792323 dns-udp-responses-sent-ipv4: 4090495242 dns-udp-responses-sent-ipv6: 322495982 dns-tcp-responses-sent-ipv4: 32701632 dns-tcp-responses-sent-ipv6: 795770