--- version: rssac002v3 service: j.root-servers.net start-period: '2021-06-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6468500291 dns-udp-queries-received-ipv6: 1291884084 dns-tcp-queries-received-ipv4: 541084302 dns-tcp-queries-received-ipv6: 120994618 dns-udp-responses-sent-ipv4: 5992210153 dns-udp-responses-sent-ipv6: 1286380881 dns-tcp-responses-sent-ipv4: 382499489 dns-tcp-responses-sent-ipv6: 120587401