--- version: rssac002v3 service: j.root-servers.net start-period: '2019-05-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7244619184 dns-udp-queries-received-ipv6: 1300884764 dns-tcp-queries-received-ipv4: 644517532 dns-tcp-queries-received-ipv6: 72782581 dns-udp-responses-sent-ipv4: 6621674804 dns-udp-responses-sent-ipv6: 1255709175 dns-tcp-responses-sent-ipv4: 459285184 dns-tcp-responses-sent-ipv6: 52193311