--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5864340520 dns-udp-queries-received-ipv6: 1087383418 dns-tcp-queries-received-ipv4: 166035368 dns-tcp-queries-received-ipv6: 30938148 dns-udp-responses-sent-ipv4: 5734124599 dns-udp-responses-sent-ipv6: 1086769482 dns-tcp-responses-sent-ipv4: 162381205 dns-tcp-responses-sent-ipv6: 31642468