--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5929378015 dns-udp-queries-received-ipv6: 431178752 dns-tcp-queries-received-ipv4: 143853632 dns-tcp-queries-received-ipv6: 17660818 dns-udp-responses-sent-ipv4: 5786688733 dns-udp-responses-sent-ipv6: 430861061 dns-tcp-responses-sent-ipv4: 144795044 dns-tcp-responses-sent-ipv6: 17717666