--- service: a.root-servers.net start-period: '2015-08-02T00:00:00Z' end-period: '2015-08-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4131426801 dns-udp-queries-received-ipv6: 249255082 dns-tcp-queries-received-ipv4: 17351674 dns-tcp-queries-received-ipv6: 9554778 dns-udp-responses-sent-ipv4: 4158024098 dns-udp-responses-sent-ipv6: 251280805 dns-tcp-responses-sent-ipv4: 14672740 dns-tcp-responses-sent-ipv6: 8142994