--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5016759236 dns-udp-queries-received-ipv6: 1014908406 dns-tcp-queries-received-ipv4: 279449434 dns-tcp-queries-received-ipv6: 95863634 dns-udp-responses-sent-ipv4: 4872011393 dns-udp-responses-sent-ipv6: 1013255334 dns-tcp-responses-sent-ipv4: 268469219 dns-tcp-responses-sent-ipv6: 96184162