--- version: rssac002v3 service: j.root-servers.net start-period: '2018-12-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6697261560 dns-udp-queries-received-ipv6: 817506371 dns-tcp-queries-received-ipv4: 422287876 dns-tcp-queries-received-ipv6: 64040846 dns-udp-responses-sent-ipv4: 6222148891 dns-udp-responses-sent-ipv6: 777265345 dns-tcp-responses-sent-ipv4: 273783763 dns-tcp-responses-sent-ipv6: 43334190