--- version: rssac002v3 service: j.root-servers.net start-period: '2021-09-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6021957279 dns-udp-queries-received-ipv6: 1227239962 dns-tcp-queries-received-ipv4: 481629657 dns-tcp-queries-received-ipv6: 88740013 dns-udp-responses-sent-ipv4: 5637899543 dns-udp-responses-sent-ipv6: 1219672087 dns-tcp-responses-sent-ipv4: 356351148 dns-tcp-responses-sent-ipv6: 88200128