--- version: rssac002v3 service: j.root-servers.net start-period: '2019-05-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7175011610 dns-udp-queries-received-ipv6: 1346831286 dns-tcp-queries-received-ipv4: 638532718 dns-tcp-queries-received-ipv6: 82974332 dns-udp-responses-sent-ipv4: 6560773770 dns-udp-responses-sent-ipv6: 1301898253 dns-tcp-responses-sent-ipv4: 471142459 dns-tcp-responses-sent-ipv6: 61971649