--- service: i.root-servers.net start-period: '2014-12-25T00:00:00Z' end-period: '2014-12-26T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2759885861 dns-udp-queries-received-ipv6: 210496292 dns-tcp-queries-received-ipv4: 6321737 dns-tcp-queries-received-ipv6: 177413 dns-udp-responses-sent-ipv4: 2745480040 dns-udp-responses-sent-ipv6: 210448476 dns-tcp-responses-sent-ipv4: 6468457 dns-tcp-responses-sent-ipv6: 181342