--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5263287493 dns-udp-queries-received-ipv6: 1412402124 dns-tcp-queries-received-ipv4: 275068421 dns-tcp-queries-received-ipv6: 56578702 dns-udp-responses-sent-ipv4: 5126453744 dns-udp-responses-sent-ipv6: 1412773984 dns-tcp-responses-sent-ipv4: 269469735 dns-tcp-responses-sent-ipv6: 56654642