--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7036324959 dns-udp-queries-received-ipv6: 923902074 dns-tcp-queries-received-ipv4: 536868232 dns-tcp-queries-received-ipv6: 105881692 dns-udp-responses-sent-ipv4: 6595394988 dns-udp-responses-sent-ipv6: 859142675 dns-tcp-responses-sent-ipv4: 370762247 dns-tcp-responses-sent-ipv6: 74216386