--- service: h.root-servers.net metric: traffic-volume version: rssac002v3 start-period: '2019-01-04T00:00:00Z' dns-udp-queries-received-ipv4: 2125807569 dns-udp-queries-received-ipv6: 455680518 dns-tcp-queries-received-ipv4: 40804971 dns-tcp-queries-received-ipv6: 14825289 dns-udp-responses-sent-ipv4: 2122329656 dns-udp-responses-sent-ipv6: 455290758 dns-tcp-responses-sent-ipv4: 38103820 dns-tcp-responses-sent-ipv6: 14010654