--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5177251448 dns-udp-queries-received-ipv6: 956388367 dns-tcp-queries-received-ipv4: 485151428 dns-tcp-queries-received-ipv6: 128598296 dns-udp-responses-sent-ipv4: 4522348498 dns-udp-responses-sent-ipv6: 915561946 dns-tcp-responses-sent-ipv4: 418406527 dns-tcp-responses-sent-ipv6: 122714066