--- version: rssac002v4 service: a.root-servers.net start-period: '2021-11-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5585223502 dns-udp-queries-received-ipv6: 1592519633 dns-tcp-queries-received-ipv4: 296071724 dns-tcp-queries-received-ipv6: 80310891 dns-udp-responses-sent-ipv4: 5588580548 dns-udp-responses-sent-ipv6: 1604811671 dns-tcp-responses-sent-ipv4: 292767096 dns-tcp-responses-sent-ipv6: 80146587