--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6839575132 dns-udp-queries-received-ipv6: 1210581058 dns-tcp-queries-received-ipv4: 197521304 dns-tcp-queries-received-ipv6: 33324768 dns-udp-responses-sent-ipv4: 6680076185 dns-udp-responses-sent-ipv6: 1209861964 dns-tcp-responses-sent-ipv4: 193908350 dns-tcp-responses-sent-ipv6: 34098344