--- service: h.root-servers.net metric: traffic-volume version: rssac002v4 start-period: 2021-06-01T00:00:00Z dns-udp-queries-received-ipv4: 4355449347 dns-udp-queries-received-ipv6: 541255106 dns-tcp-queries-received-ipv4: 133346876 dns-tcp-queries-received-ipv6: 85403067 dns-udp-responses-sent-ipv4: 4348854045 dns-udp-responses-sent-ipv6: 541206291 dns-tcp-responses-sent-ipv4: 136470059 dns-tcp-responses-sent-ipv6: 87336010