--- service: i.root-servers.net start-period: '2015-01-25T00:00:00Z' end-period: '2015-01-26T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2912265213 dns-udp-queries-received-ipv6: 228507818 dns-tcp-queries-received-ipv4: 6255927 dns-tcp-queries-received-ipv6: 216593 dns-udp-responses-sent-ipv4: 2896132393 dns-udp-responses-sent-ipv6: 229379920 dns-tcp-responses-sent-ipv4: 6254939 dns-tcp-responses-sent-ipv6: 224374