--- service: a.root-servers.net start-period: '2015-08-09T00:00:00Z' end-period: '2015-08-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4194117567 dns-udp-queries-received-ipv6: 266407863 dns-tcp-queries-received-ipv4: 15922068 dns-tcp-queries-received-ipv6: 10392685 dns-udp-responses-sent-ipv4: 4222845985 dns-udp-responses-sent-ipv6: 268761556 dns-tcp-responses-sent-ipv4: 13412019 dns-tcp-responses-sent-ipv6: 8971803