--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5132491472 dns-udp-queries-received-ipv6: 799442833 dns-tcp-queries-received-ipv4: 426186710 dns-tcp-queries-received-ipv6: 106728361 dns-udp-responses-sent-ipv4: 4039134755 dns-udp-responses-sent-ipv6: 766588293 dns-tcp-responses-sent-ipv4: 372815073 dns-tcp-responses-sent-ipv6: 97181594