--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4467191099 dns-udp-queries-received-ipv6: 809847511 dns-tcp-queries-received-ipv4: 408298590 dns-tcp-queries-received-ipv6: 110294871 dns-udp-responses-sent-ipv4: 3718635072 dns-udp-responses-sent-ipv6: 756841422 dns-tcp-responses-sent-ipv4: 322994648 dns-tcp-responses-sent-ipv6: 108458955