--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6387294932 dns-udp-queries-received-ipv6: 1214315249 dns-tcp-queries-received-ipv4: 190043340 dns-tcp-queries-received-ipv6: 38483989 dns-udp-responses-sent-ipv4: 6232561172 dns-udp-responses-sent-ipv6: 1212278249 dns-tcp-responses-sent-ipv4: 186338232 dns-tcp-responses-sent-ipv6: 39906116