--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5771379202 dns-udp-queries-received-ipv6: 1150690429 dns-tcp-queries-received-ipv4: 291499002 dns-tcp-queries-received-ipv6: 106903758 dns-udp-responses-sent-ipv4: 5584820249 dns-udp-responses-sent-ipv6: 1149294625 dns-tcp-responses-sent-ipv4: 279457278 dns-tcp-responses-sent-ipv6: 107370775