--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5695024930 dns-udp-queries-received-ipv6: 858547735 dns-tcp-queries-received-ipv4: 172249382 dns-tcp-queries-received-ipv6: 35220728 dns-udp-responses-sent-ipv4: 5571828632 dns-udp-responses-sent-ipv6: 858057215 dns-tcp-responses-sent-ipv4: 169030077 dns-tcp-responses-sent-ipv6: 32437975