--- version: rssac002v3 service: j.root-servers.net start-period: '2021-05-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6226572900 dns-udp-queries-received-ipv6: 1189772697 dns-tcp-queries-received-ipv4: 597280488 dns-tcp-queries-received-ipv6: 88191620 dns-udp-responses-sent-ipv4: 5681827421 dns-udp-responses-sent-ipv6: 1185648191 dns-tcp-responses-sent-ipv4: 399255242 dns-tcp-responses-sent-ipv6: 88944027