--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6033227085 dns-udp-queries-received-ipv6: 1198518233 dns-tcp-queries-received-ipv4: 297578557 dns-tcp-queries-received-ipv6: 118313157 dns-udp-responses-sent-ipv4: 5862536607 dns-udp-responses-sent-ipv6: 1196343950 dns-tcp-responses-sent-ipv4: 284834715 dns-tcp-responses-sent-ipv6: 118689371