--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7431467081 dns-udp-queries-received-ipv6: 1236498838 dns-tcp-queries-received-ipv4: 134936149 dns-tcp-queries-received-ipv6: 30639001 dns-udp-responses-sent-ipv4: 7328964648 dns-udp-responses-sent-ipv6: 1248345199 dns-tcp-responses-sent-ipv4: 130130654 dns-tcp-responses-sent-ipv6: 29181711