--- version: rssac002v3 service: j.root-servers.net start-period: '2019-04-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7101044809 dns-udp-queries-received-ipv6: 1220936243 dns-tcp-queries-received-ipv4: 662611181 dns-tcp-queries-received-ipv6: 77875456 dns-udp-responses-sent-ipv4: 6520491136 dns-udp-responses-sent-ipv6: 1174131414 dns-tcp-responses-sent-ipv4: 459567130 dns-tcp-responses-sent-ipv6: 56257376