--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5886864934 dns-udp-queries-received-ipv6: 1110439549 dns-tcp-queries-received-ipv4: 125998409 dns-tcp-queries-received-ipv6: 28384202 dns-udp-responses-sent-ipv4: 5816304902 dns-udp-responses-sent-ipv6: 1115646431 dns-tcp-responses-sent-ipv4: 122014858 dns-tcp-responses-sent-ipv6: 27716495