--- version: rssac002v3 service: a.root-servers.net start-period: '2017-12-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5329252919 dns-udp-queries-received-ipv6: 392647649 dns-tcp-queries-received-ipv4: 112112829 dns-tcp-queries-received-ipv6: 13807595 dns-udp-responses-sent-ipv4: 5326350611 dns-udp-responses-sent-ipv6: 392633133 dns-tcp-responses-sent-ipv4: 112524650 dns-tcp-responses-sent-ipv6: 13949497