--- version: rssac002v3 service: j.root-servers.net start-period: '2019-04-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7303758597 dns-udp-queries-received-ipv6: 1175352008 dns-tcp-queries-received-ipv4: 640930423 dns-tcp-queries-received-ipv6: 68229898 dns-udp-responses-sent-ipv4: 6712544108 dns-udp-responses-sent-ipv6: 1135645191 dns-tcp-responses-sent-ipv4: 447339505 dns-tcp-responses-sent-ipv6: 50070892