--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5465541919 dns-udp-queries-received-ipv6: 1076334504 dns-tcp-queries-received-ipv4: 119341009 dns-tcp-queries-received-ipv6: 27873412 dns-udp-responses-sent-ipv4: 5398901433 dns-udp-responses-sent-ipv6: 1082461394 dns-tcp-responses-sent-ipv4: 115952652 dns-tcp-responses-sent-ipv6: 27368394