--- version: rssac002v3 service: a.root-servers.net start-period: '2019-04-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5430257936 dns-udp-queries-received-ipv6: 798186112 dns-tcp-queries-received-ipv4: 198701230 dns-tcp-queries-received-ipv6: 28989964 dns-udp-responses-sent-ipv4: 5316546073 dns-udp-responses-sent-ipv6: 797730263 dns-tcp-responses-sent-ipv4: 195750400 dns-tcp-responses-sent-ipv6: 29635957