--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4877676164 dns-udp-queries-received-ipv6: 1063024341 dns-tcp-queries-received-ipv4: 287924421 dns-tcp-queries-received-ipv6: 109921226 dns-udp-responses-sent-ipv4: 4829081193 dns-udp-responses-sent-ipv6: 1077992579 dns-tcp-responses-sent-ipv4: 275514135 dns-tcp-responses-sent-ipv6: 110087732