--- version: rssac002v3 service: j.root-servers.net start-period: '2021-09-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5538018013 dns-udp-queries-received-ipv6: 1142109780 dns-tcp-queries-received-ipv4: 461054808 dns-tcp-queries-received-ipv6: 91545251 dns-udp-responses-sent-ipv4: 5180437013 dns-udp-responses-sent-ipv6: 1138194187 dns-tcp-responses-sent-ipv4: 336741522 dns-tcp-responses-sent-ipv6: 91662097