--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5573750489 dns-udp-queries-received-ipv6: 1202640841 dns-tcp-queries-received-ipv4: 360753939 dns-tcp-queries-received-ipv6: 72323065 dns-udp-responses-sent-ipv4: 5232529532 dns-udp-responses-sent-ipv6: 1177399988 dns-tcp-responses-sent-ipv4: 248616824 dns-tcp-responses-sent-ipv6: 69992876