--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6993038909 dns-udp-queries-received-ipv6: 404192975 dns-tcp-queries-received-ipv4: 95510081 dns-tcp-queries-received-ipv6: 13996190 dns-udp-responses-sent-ipv4: 6877026614 dns-udp-responses-sent-ipv6: 403820289 dns-tcp-responses-sent-ipv4: 94317923 dns-tcp-responses-sent-ipv6: 14009630