--- service: a.root-servers.net start-period: '2015-10-01T00:00:00Z' end-period: '2015-10-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3310525387 dns-udp-queries-received-ipv6: 279819861 dns-tcp-queries-received-ipv4: 22924710 dns-tcp-queries-received-ipv6: 10223748 dns-udp-responses-sent-ipv4: 3309631135 dns-udp-responses-sent-ipv6: 277918527 dns-tcp-responses-sent-ipv4: 19553022 dns-tcp-responses-sent-ipv6: 8327228