--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5993027318 dns-udp-queries-received-ipv6: 1156849340 dns-tcp-queries-received-ipv4: 177230414 dns-tcp-queries-received-ipv6: 31911468 dns-udp-responses-sent-ipv4: 5853058344 dns-udp-responses-sent-ipv6: 1155748538 dns-tcp-responses-sent-ipv4: 174336844 dns-tcp-responses-sent-ipv6: 32600639