--- version: rssac002v3 service: j.root-servers.net start-period: '2019-06-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8621798522 dns-udp-queries-received-ipv6: 1354748602 dns-tcp-queries-received-ipv4: 792094037 dns-tcp-queries-received-ipv6: 77382286 dns-udp-responses-sent-ipv4: 7895437320 dns-udp-responses-sent-ipv6: 1309633313 dns-tcp-responses-sent-ipv4: 556289419 dns-tcp-responses-sent-ipv6: 55941170