--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 558530557 dns-udp-queries-received-ipv6: 174854858 dns-tcp-queries-received-ipv4: 6864025 dns-tcp-queries-received-ipv6: 1092734 dns-udp-responses-sent-ipv4: 562552314 dns-udp-responses-sent-ipv6: 174446684 dns-tcp-responses-sent-ipv4: 6415883 dns-tcp-responses-sent-ipv6: 1124737