--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5660294886 dns-udp-queries-received-ipv6: 814991451 dns-tcp-queries-received-ipv4: 192278979 dns-tcp-queries-received-ipv6: 35110286 dns-udp-responses-sent-ipv4: 5541388707 dns-udp-responses-sent-ipv6: 814547137 dns-tcp-responses-sent-ipv4: 187986780 dns-tcp-responses-sent-ipv6: 34584116