--- version: rssac002v3 service: j.root-servers.net start-period: '2021-04-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6931681790 dns-udp-queries-received-ipv6: 1510938827 dns-tcp-queries-received-ipv4: 560544920 dns-tcp-queries-received-ipv6: 97288341 dns-udp-responses-sent-ipv4: 6427466250 dns-udp-responses-sent-ipv6: 1489839112 dns-tcp-responses-sent-ipv4: 393175519 dns-tcp-responses-sent-ipv6: 91441781