--- version: rssac002v4 service: a.root-servers.net start-period: '2021-11-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5548660803 dns-udp-queries-received-ipv6: 1712019592 dns-tcp-queries-received-ipv4: 295269911 dns-tcp-queries-received-ipv6: 78529328 dns-udp-responses-sent-ipv4: 5551759816 dns-udp-responses-sent-ipv6: 1720894098 dns-tcp-responses-sent-ipv4: 291758765 dns-tcp-responses-sent-ipv6: 78358929