--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5918237435 dns-udp-queries-received-ipv6: 1173644490 dns-tcp-queries-received-ipv4: 148064850 dns-tcp-queries-received-ipv6: 36963356 dns-udp-responses-sent-ipv4: 5822062236 dns-udp-responses-sent-ipv6: 1158811148 dns-tcp-responses-sent-ipv4: 141731551 dns-tcp-responses-sent-ipv6: 34033495