--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5637474381 dns-udp-queries-received-ipv6: 1286734084 dns-tcp-queries-received-ipv4: 341652684 dns-tcp-queries-received-ipv6: 70366874 dns-udp-responses-sent-ipv4: 5315183173 dns-udp-responses-sent-ipv6: 1258890599 dns-tcp-responses-sent-ipv4: 242128145 dns-tcp-responses-sent-ipv6: 67807087