--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 553585260 dns-udp-queries-received-ipv6: 176506914 dns-tcp-queries-received-ipv4: 7157218 dns-tcp-queries-received-ipv6: 983832 dns-udp-responses-sent-ipv4: 553233198 dns-udp-responses-sent-ipv6: 176053704 dns-tcp-responses-sent-ipv4: 6692011 dns-tcp-responses-sent-ipv6: 1018429