--- service: a.root-servers.net start-period: '2013-11-22T00:00:00Z' end-period: '2013-11-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1445150857 dns-udp-queries-received-ipv6: 87607414 dns-tcp-queries-received-ipv4: 7649166 dns-tcp-queries-received-ipv6: 1414788 dns-udp-responses-sent-ipv4: 1444094444 dns-udp-responses-sent-ipv6: 87613881 dns-tcp-responses-sent-ipv4: 8038776 dns-tcp-responses-sent-ipv6: 5283