--- service: a.root-servers.net start-period: '2013-10-01T00:00:00Z' end-period: '2013-10-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2021642083 dns-udp-queries-received-ipv6: 105738409 dns-tcp-queries-received-ipv4: 11331239 dns-tcp-queries-received-ipv6: 1169462 dns-udp-responses-sent-ipv4: 2018411286 dns-udp-responses-sent-ipv6: 105814654 dns-tcp-responses-sent-ipv4: 12208044 dns-tcp-responses-sent-ipv6: 198501