--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5238782973 dns-udp-queries-received-ipv6: 1046237838 dns-tcp-queries-received-ipv4: 498180128 dns-tcp-queries-received-ipv6: 148725320 dns-udp-responses-sent-ipv4: 4175042741 dns-udp-responses-sent-ipv6: 956343232 dns-tcp-responses-sent-ipv4: 364458556 dns-tcp-responses-sent-ipv6: 137533694