--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5802837585 dns-udp-queries-received-ipv6: 1264542474 dns-tcp-queries-received-ipv4: 365345578 dns-tcp-queries-received-ipv6: 77530441 dns-udp-responses-sent-ipv4: 5465113874 dns-udp-responses-sent-ipv6: 1239078826 dns-tcp-responses-sent-ipv4: 258594826 dns-tcp-responses-sent-ipv6: 74231717