--- version: rssac002v4 service: a.root-servers.net start-period: '2021-10-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4962263731 dns-udp-queries-received-ipv6: 1554965029 dns-tcp-queries-received-ipv4: 308644199 dns-tcp-queries-received-ipv6: 162186808 dns-udp-responses-sent-ipv4: 4825559528 dns-udp-responses-sent-ipv6: 1553303892 dns-tcp-responses-sent-ipv4: 305495055 dns-tcp-responses-sent-ipv6: 161992346