--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4757910944 dns-udp-queries-received-ipv6: 946833304 dns-tcp-queries-received-ipv4: 425860179 dns-tcp-queries-received-ipv6: 131131259 dns-udp-responses-sent-ipv4: 4104327674 dns-udp-responses-sent-ipv6: 901801316 dns-tcp-responses-sent-ipv4: 365364378 dns-tcp-responses-sent-ipv6: 128670659