--- service: a.root-servers.net start-period: '2015-11-28T00:00:00Z' end-period: '2015-11-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3431027794 dns-udp-queries-received-ipv6: 278224752 dns-tcp-queries-received-ipv4: 29990337 dns-tcp-queries-received-ipv6: 1809107 dns-udp-responses-sent-ipv4: 3431104591 dns-udp-responses-sent-ipv6: 277842765 dns-tcp-responses-sent-ipv4: 25412597 dns-tcp-responses-sent-ipv6: 278591