--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1764721057 dns-udp-queries-received-ipv6: 484279359 dns-tcp-queries-received-ipv4: 19569281 dns-tcp-queries-received-ipv6: 4488270 dns-udp-responses-sent-ipv4: 1745837719 dns-udp-responses-sent-ipv6: 483470203 dns-tcp-responses-sent-ipv4: 18195613 dns-tcp-responses-sent-ipv6: 4181291