--- service: a.root-servers.net start-period: '2015-08-23T00:00:00Z' end-period: '2015-08-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3735922046 dns-udp-queries-received-ipv6: 182813948 dns-tcp-queries-received-ipv4: 17301833 dns-tcp-queries-received-ipv6: 8701774 dns-udp-responses-sent-ipv4: 3760427231 dns-udp-responses-sent-ipv6: 185729479 dns-tcp-responses-sent-ipv4: 14565245 dns-tcp-responses-sent-ipv6: 7524374