--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5783618112 dns-udp-queries-received-ipv6: 1244576699 dns-tcp-queries-received-ipv4: 351224634 dns-tcp-queries-received-ipv6: 84110978 dns-udp-responses-sent-ipv4: 5423912016 dns-udp-responses-sent-ipv6: 1218998713 dns-tcp-responses-sent-ipv4: 251653602 dns-tcp-responses-sent-ipv6: 80529391