--- version: rssac002v3 service: a.root-servers.net start-period: '2019-04-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6028588823 dns-udp-queries-received-ipv6: 872800663 dns-tcp-queries-received-ipv4: 216019437 dns-tcp-queries-received-ipv6: 29285559 dns-udp-responses-sent-ipv4: 5896175559 dns-udp-responses-sent-ipv6: 872393104 dns-tcp-responses-sent-ipv4: 212665106 dns-tcp-responses-sent-ipv6: 29758049