--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5913625381 dns-udp-queries-received-ipv6: 1079756391 dns-tcp-queries-received-ipv4: 132595798 dns-tcp-queries-received-ipv6: 31763312 dns-udp-responses-sent-ipv4: 5838977580 dns-udp-responses-sent-ipv6: 1085426922 dns-tcp-responses-sent-ipv4: 129216729 dns-tcp-responses-sent-ipv6: 31288062