--- version: rssac002v3 service: j.root-servers.net start-period: '2021-03-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6883484978 dns-udp-queries-received-ipv6: 1468586093 dns-tcp-queries-received-ipv4: 616707675 dns-tcp-queries-received-ipv6: 130707450 dns-udp-responses-sent-ipv4: 6347136354 dns-udp-responses-sent-ipv6: 1449055519 dns-tcp-responses-sent-ipv4: 426508060 dns-tcp-responses-sent-ipv6: 129390113