--- version: rssac002v3 service: j.root-servers.net start-period: '2018-12-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6155708109 dns-udp-queries-received-ipv6: 766489555 dns-tcp-queries-received-ipv4: 421898758 dns-tcp-queries-received-ipv6: 63108446 dns-udp-responses-sent-ipv4: 5708159050 dns-udp-responses-sent-ipv6: 730056281 dns-tcp-responses-sent-ipv4: 271432117 dns-tcp-responses-sent-ipv6: 45775904