--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5389276413 dns-udp-queries-received-ipv6: 1039826345 dns-tcp-queries-received-ipv4: 151800891 dns-tcp-queries-received-ipv6: 30239418 dns-udp-responses-sent-ipv4: 5269468550 dns-udp-responses-sent-ipv6: 1038782437 dns-tcp-responses-sent-ipv4: 148602491 dns-tcp-responses-sent-ipv6: 30847804