--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5801292459 dns-udp-queries-received-ipv6: 1553314507 dns-tcp-queries-received-ipv4: 598330584 dns-tcp-queries-received-ipv6: 239460758 dns-udp-responses-sent-ipv4: 4481011036 dns-udp-responses-sent-ipv6: 1322067610 dns-tcp-responses-sent-ipv4: 464649657 dns-tcp-responses-sent-ipv6: 229158287