--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5670110535 dns-udp-queries-received-ipv6: 1264187331 dns-tcp-queries-received-ipv4: 116589309 dns-tcp-queries-received-ipv6: 28529937 dns-udp-responses-sent-ipv4: 5556682732 dns-udp-responses-sent-ipv6: 1262322148 dns-tcp-responses-sent-ipv4: 111519340 dns-tcp-responses-sent-ipv6: 26746842