--- version: rssac002v4 service: a.root-servers.net start-period: '2021-11-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5259960667 dns-udp-queries-received-ipv6: 1352937688 dns-tcp-queries-received-ipv4: 264298268 dns-tcp-queries-received-ipv6: 60219182 dns-udp-responses-sent-ipv4: 5552052178 dns-udp-responses-sent-ipv6: 1407994287 dns-tcp-responses-sent-ipv4: 260247917 dns-tcp-responses-sent-ipv6: 60096407