--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 571613561 dns-udp-queries-received-ipv6: 173893701 dns-tcp-queries-received-ipv4: 7234956 dns-tcp-queries-received-ipv6: 1042906 dns-udp-responses-sent-ipv4: 576454004 dns-udp-responses-sent-ipv6: 173435922 dns-tcp-responses-sent-ipv4: 6744950 dns-tcp-responses-sent-ipv6: 1091728