--- version: rssac002v3 service: j.root-servers.net start-period: '2021-01-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5923899718 dns-udp-queries-received-ipv6: 1362670735 dns-tcp-queries-received-ipv4: 563437839 dns-tcp-queries-received-ipv6: 161862755 dns-udp-responses-sent-ipv4: 5448982811 dns-udp-responses-sent-ipv6: 1342993710 dns-tcp-responses-sent-ipv4: 404548863 dns-tcp-responses-sent-ipv6: 174025919