--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5233112070 dns-udp-queries-received-ipv6: 1263152298 dns-tcp-queries-received-ipv4: 337800242 dns-tcp-queries-received-ipv6: 50610039 dns-udp-responses-sent-ipv4: 4901220982 dns-udp-responses-sent-ipv6: 1237593769 dns-tcp-responses-sent-ipv4: 226559132 dns-tcp-responses-sent-ipv6: 49967390