--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3998268794 dns-udp-queries-received-ipv6: 603583339 dns-tcp-queries-received-ipv4: 115168295 dns-tcp-queries-received-ipv6: 20142993 dns-udp-responses-sent-ipv4: 3891404258 dns-udp-responses-sent-ipv6: 603067112 dns-tcp-responses-sent-ipv4: 111849888 dns-tcp-responses-sent-ipv6: 20167749