--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7071120913 dns-udp-queries-received-ipv6: 1269091202 dns-tcp-queries-received-ipv4: 134650001 dns-tcp-queries-received-ipv6: 31457289 dns-udp-responses-sent-ipv4: 6941118487 dns-udp-responses-sent-ipv6: 1265809792 dns-tcp-responses-sent-ipv4: 127533854 dns-tcp-responses-sent-ipv6: 29150362