--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5180555479 dns-udp-queries-received-ipv6: 936937676 dns-tcp-queries-received-ipv4: 489250136 dns-tcp-queries-received-ipv6: 110632891 dns-udp-responses-sent-ipv4: 4506419615 dns-udp-responses-sent-ipv6: 916882925 dns-tcp-responses-sent-ipv4: 417484613 dns-tcp-responses-sent-ipv6: 104445100