--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5105817341 dns-udp-queries-received-ipv6: 367583318 dns-tcp-queries-received-ipv4: 150058183 dns-tcp-queries-received-ipv6: 16902440 dns-udp-responses-sent-ipv4: 5101665002 dns-udp-responses-sent-ipv6: 367504124 dns-tcp-responses-sent-ipv4: 150270171 dns-tcp-responses-sent-ipv6: 16963210