--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5261856362 dns-udp-queries-received-ipv6: 988562494 dns-tcp-queries-received-ipv4: 511984423 dns-tcp-queries-received-ipv6: 130911283 dns-udp-responses-sent-ipv4: 4132768329 dns-udp-responses-sent-ipv6: 876240012 dns-tcp-responses-sent-ipv4: 383154850 dns-tcp-responses-sent-ipv6: 121099002