--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6624295806 dns-udp-queries-received-ipv6: 1182445077 dns-tcp-queries-received-ipv4: 191539311 dns-tcp-queries-received-ipv6: 33843292 dns-udp-responses-sent-ipv4: 6467163553 dns-udp-responses-sent-ipv6: 1181934512 dns-tcp-responses-sent-ipv4: 186947999 dns-tcp-responses-sent-ipv6: 34591934