--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4746500344 dns-udp-queries-received-ipv6: 1364595092 dns-tcp-queries-received-ipv4: 259355182 dns-tcp-queries-received-ipv6: 47757686 dns-udp-responses-sent-ipv4: 4727797535 dns-udp-responses-sent-ipv6: 1369707550 dns-tcp-responses-sent-ipv4: 256344036 dns-tcp-responses-sent-ipv6: 47732978