--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6021560027 dns-udp-queries-received-ipv6: 1167583886 dns-tcp-queries-received-ipv4: 144035161 dns-tcp-queries-received-ipv6: 36813019 dns-udp-responses-sent-ipv4: 5908501903 dns-udp-responses-sent-ipv6: 1152764404 dns-tcp-responses-sent-ipv4: 136749969 dns-tcp-responses-sent-ipv6: 34122292