--- version: rssac002v3 service: i.root-servers.net start-period: '2018-01-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5139084655 dns-udp-queries-received-ipv6: 651197378 dns-tcp-queries-received-ipv4: 89625155 dns-tcp-queries-received-ipv6: 12754331 dns-udp-responses-sent-ipv4: 5196556810 dns-udp-responses-sent-ipv6: 715661905 dns-tcp-responses-sent-ipv4: 88996123 dns-tcp-responses-sent-ipv6: 12783305