--- service: i.root-servers.net start-period: '2015-04-14T00:00:00Z' end-period: '2015-04-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3764305859 dns-udp-queries-received-ipv6: 264631345 dns-tcp-queries-received-ipv4: 10169098 dns-tcp-queries-received-ipv6: 281027 dns-udp-responses-sent-ipv4: 3709276751 dns-udp-responses-sent-ipv6: 264530401 dns-tcp-responses-sent-ipv4: 10191548 dns-tcp-responses-sent-ipv6: 296897