--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4807128987 dns-udp-queries-received-ipv6: 1327901781 dns-tcp-queries-received-ipv4: 333088343 dns-tcp-queries-received-ipv6: 146669318 dns-udp-responses-sent-ipv4: 4843456421 dns-udp-responses-sent-ipv6: 1346692336 dns-tcp-responses-sent-ipv4: 310188257 dns-tcp-responses-sent-ipv6: 146636142