--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5278865414 dns-udp-queries-received-ipv6: 1318219294 dns-tcp-queries-received-ipv4: 313570163 dns-tcp-queries-received-ipv6: 92148387 dns-udp-responses-sent-ipv4: 5336938065 dns-udp-responses-sent-ipv6: 1342368627 dns-tcp-responses-sent-ipv4: 291123945 dns-tcp-responses-sent-ipv6: 92194225