--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5359728418 dns-udp-queries-received-ipv6: 1064125215 dns-tcp-queries-received-ipv4: 116070820 dns-tcp-queries-received-ipv6: 27873656 dns-udp-responses-sent-ipv4: 5298178322 dns-udp-responses-sent-ipv6: 1062741574 dns-tcp-responses-sent-ipv4: 112404740 dns-tcp-responses-sent-ipv6: 27282638