--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5747325685 dns-udp-queries-received-ipv6: 1234049820 dns-tcp-queries-received-ipv4: 341843525 dns-tcp-queries-received-ipv6: 112373695 dns-udp-responses-sent-ipv4: 5706460835 dns-udp-responses-sent-ipv6: 1260100660 dns-tcp-responses-sent-ipv4: 321039042 dns-tcp-responses-sent-ipv6: 112044569