--- service: a.root-servers.net start-period: '2015-09-26T00:00:00Z' end-period: '2015-09-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2854212414 dns-udp-queries-received-ipv6: 283986859 dns-tcp-queries-received-ipv4: 19132257 dns-tcp-queries-received-ipv6: 10846740 dns-udp-responses-sent-ipv4: 2853335054 dns-udp-responses-sent-ipv6: 281517010 dns-tcp-responses-sent-ipv4: 16250597 dns-tcp-responses-sent-ipv6: 9367502