--- version: rssac002v3 service: i.root-servers.net start-period: '2018-05-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6198142808 dns-udp-queries-received-ipv6: 779371164 dns-tcp-queries-received-ipv4: 130172861 dns-tcp-queries-received-ipv6: 20998528 dns-udp-responses-sent-ipv4: 6246544081 dns-udp-responses-sent-ipv6: 797725968 dns-tcp-responses-sent-ipv4: 127192144 dns-tcp-responses-sent-ipv6: 20953082