--- version: rssac002v3 service: a.root-servers.net start-period: '2021-10-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5053924865 dns-udp-queries-received-ipv6: 1197043252 dns-tcp-queries-received-ipv4: 290249563 dns-tcp-queries-received-ipv6: 123084602 dns-udp-responses-sent-ipv4: 5056583482 dns-udp-responses-sent-ipv6: 1220252843 dns-tcp-responses-sent-ipv4: 284913574 dns-tcp-responses-sent-ipv6: 126452495