--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3671486600 dns-udp-queries-received-ipv6: 446609374 dns-tcp-queries-received-ipv4: 124458015 dns-tcp-queries-received-ipv6: 18204524 dns-udp-responses-sent-ipv4: 3573225267 dns-udp-responses-sent-ipv6: 446291064 dns-tcp-responses-sent-ipv4: 121715824 dns-tcp-responses-sent-ipv6: 18218173