--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5009624390 dns-udp-queries-received-ipv6: 780514780 dns-tcp-queries-received-ipv4: 134159841 dns-tcp-queries-received-ipv6: 31684129 dns-udp-responses-sent-ipv4: 4902975645 dns-udp-responses-sent-ipv6: 779848559 dns-tcp-responses-sent-ipv4: 130324308 dns-tcp-responses-sent-ipv6: 31957945