--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5086610824 dns-udp-queries-received-ipv6: 990485560 dns-tcp-queries-received-ipv4: 464451044 dns-tcp-queries-received-ipv6: 132607625 dns-udp-responses-sent-ipv4: 4119347179 dns-udp-responses-sent-ipv6: 915788835 dns-tcp-responses-sent-ipv4: 329911036 dns-tcp-responses-sent-ipv6: 118300419