--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5254047239 dns-udp-queries-received-ipv6: 1010672065 dns-tcp-queries-received-ipv4: 510794470 dns-tcp-queries-received-ipv6: 130402387 dns-udp-responses-sent-ipv4: 4141777928 dns-udp-responses-sent-ipv6: 908929335 dns-tcp-responses-sent-ipv4: 379521672 dns-tcp-responses-sent-ipv6: 118129665