--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5775438446 dns-udp-queries-received-ipv6: 1147228217 dns-tcp-queries-received-ipv4: 166417181 dns-tcp-queries-received-ipv6: 36813078 dns-udp-responses-sent-ipv4: 5649009326 dns-udp-responses-sent-ipv6: 1146277200 dns-tcp-responses-sent-ipv4: 162601941 dns-tcp-responses-sent-ipv6: 38152117