--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5979270995 dns-udp-queries-received-ipv6: 416416395 dns-tcp-queries-received-ipv4: 132422495 dns-tcp-queries-received-ipv6: 17097397 dns-udp-responses-sent-ipv4: 5827430523 dns-udp-responses-sent-ipv6: 416102350 dns-tcp-responses-sent-ipv4: 131866805 dns-tcp-responses-sent-ipv6: 17136918