--- version: rssac002v3 service: j.root-servers.net start-period: '2021-04-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6904989781 dns-udp-queries-received-ipv6: 1479369328 dns-tcp-queries-received-ipv4: 614345331 dns-tcp-queries-received-ipv6: 119355769 dns-udp-responses-sent-ipv4: 6370446139 dns-udp-responses-sent-ipv6: 1460564023 dns-tcp-responses-sent-ipv4: 421460097 dns-tcp-responses-sent-ipv6: 113100797