--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5424188145 dns-udp-queries-received-ipv6: 1134990307 dns-tcp-queries-received-ipv4: 98246021 dns-tcp-queries-received-ipv6: 17863346 dns-udp-responses-sent-ipv4: 5421977113 dns-udp-responses-sent-ipv6: 1155157311 dns-tcp-responses-sent-ipv4: 95470692 dns-tcp-responses-sent-ipv6: 17542362