--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4785074080 dns-udp-queries-received-ipv6: 1234473857 dns-tcp-queries-received-ipv4: 267168468 dns-tcp-queries-received-ipv6: 53103739 dns-udp-responses-sent-ipv4: 4951497339 dns-udp-responses-sent-ipv6: 1253137484 dns-tcp-responses-sent-ipv4: 263360065 dns-tcp-responses-sent-ipv6: 53095582