--- service: i.root-servers.net start-period: '2015-01-16T00:00:00Z' end-period: '2015-01-17T00:00:14Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3073487556 dns-udp-queries-received-ipv6: 230545832 dns-tcp-queries-received-ipv4: 6203837 dns-tcp-queries-received-ipv6: 169481 dns-udp-responses-sent-ipv4: 3050757820 dns-udp-responses-sent-ipv6: 230456123 dns-tcp-responses-sent-ipv4: 6254980 dns-tcp-responses-sent-ipv6: 176792