--- version: rssac002v3 service: j.root-servers.net start-period: '2021-01-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6470185055 dns-udp-queries-received-ipv6: 1384268231 dns-tcp-queries-received-ipv4: 552660812 dns-tcp-queries-received-ipv6: 111860577 dns-udp-responses-sent-ipv4: 5984138187 dns-udp-responses-sent-ipv6: 1345102784 dns-tcp-responses-sent-ipv4: 401109095 dns-tcp-responses-sent-ipv6: 104169220