--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6976768640 dns-udp-queries-received-ipv6: 1319730016 dns-tcp-queries-received-ipv4: 148004567 dns-tcp-queries-received-ipv6: 34176760 dns-udp-responses-sent-ipv4: 6856660203 dns-udp-responses-sent-ipv6: 1313854108 dns-tcp-responses-sent-ipv4: 140944461 dns-tcp-responses-sent-ipv6: 31090729