--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5019810490 dns-udp-queries-received-ipv6: 1247894657 dns-tcp-queries-received-ipv4: 533631069 dns-tcp-queries-received-ipv6: 165524598 dns-udp-responses-sent-ipv4: 4437488513 dns-udp-responses-sent-ipv6: 1098296164 dns-tcp-responses-sent-ipv4: 501497839 dns-tcp-responses-sent-ipv6: 146557278