--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2016086109 dns-udp-queries-received-ipv6: 490079493 dns-tcp-queries-received-ipv4: 20702680 dns-tcp-queries-received-ipv6: 4386036 dns-udp-responses-sent-ipv4: 2000163915 dns-udp-responses-sent-ipv6: 490771941 dns-tcp-responses-sent-ipv4: 19536893 dns-tcp-responses-sent-ipv6: 4165155