--- version: rssac002v3 service: i.root-servers.net start-period: '2018-06-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5164800797 dns-udp-queries-received-ipv6: 963559212 dns-tcp-queries-received-ipv4: 119424689 dns-tcp-queries-received-ipv6: 17814081 dns-udp-responses-sent-ipv4: 5182597686 dns-udp-responses-sent-ipv6: 936883435 dns-tcp-responses-sent-ipv4: 115244145 dns-tcp-responses-sent-ipv6: 17799472