--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6460909855 dns-udp-queries-received-ipv6: 1153771630 dns-tcp-queries-received-ipv4: 191643263 dns-tcp-queries-received-ipv6: 34337128 dns-udp-responses-sent-ipv4: 6293676685 dns-udp-responses-sent-ipv6: 1153144491 dns-tcp-responses-sent-ipv4: 187658140 dns-tcp-responses-sent-ipv6: 35395769