--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5795382485 dns-udp-queries-received-ipv6: 1394865984 dns-tcp-queries-received-ipv4: 287013231 dns-tcp-queries-received-ipv6: 105494962 dns-udp-responses-sent-ipv4: 5632459379 dns-udp-responses-sent-ipv6: 1392344571 dns-tcp-responses-sent-ipv4: 279472790 dns-tcp-responses-sent-ipv6: 105380538