--- service: i.root-servers.net start-period: '2015-07-05T00:00:00Z' end-period: '2015-07-06T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3622693879 dns-udp-queries-received-ipv6: 256152675 dns-tcp-queries-received-ipv4: 12415051 dns-tcp-queries-received-ipv6: 314092 dns-udp-responses-sent-ipv4: 3588867867 dns-udp-responses-sent-ipv6: 256114266 dns-tcp-responses-sent-ipv4: 12269919 dns-tcp-responses-sent-ipv6: 315632