--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5627757819 dns-udp-queries-received-ipv6: 1334292989 dns-tcp-queries-received-ipv4: 408445514 dns-tcp-queries-received-ipv6: 56232076 dns-udp-responses-sent-ipv4: 5206258672 dns-udp-responses-sent-ipv6: 1303222431 dns-tcp-responses-sent-ipv4: 266156393 dns-tcp-responses-sent-ipv6: 55047737