--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4844126017 dns-udp-queries-received-ipv6: 916488445 dns-tcp-queries-received-ipv4: 412825129 dns-tcp-queries-received-ipv6: 118425330 dns-udp-responses-sent-ipv4: 4085313201 dns-udp-responses-sent-ipv6: 859720538 dns-tcp-responses-sent-ipv4: 319099709 dns-tcp-responses-sent-ipv6: 118172434