--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5287783335 dns-udp-queries-received-ipv6: 1019167365 dns-tcp-queries-received-ipv4: 274273239 dns-tcp-queries-received-ipv6: 112940266 dns-udp-responses-sent-ipv4: 5111565644 dns-udp-responses-sent-ipv6: 1017732533 dns-tcp-responses-sent-ipv4: 264401507 dns-tcp-responses-sent-ipv6: 113226384