--- service: h.root-servers.net metric: traffic-volume version: rssac002v3 start-period: '2019-06-21T00:00:00Z' dns-udp-queries-received-ipv4: 3257822641 dns-udp-queries-received-ipv6: 667278904 dns-tcp-queries-received-ipv4: 71252819 dns-tcp-queries-received-ipv6: 18297097 dns-udp-responses-sent-ipv4: 3219067725 dns-udp-responses-sent-ipv6: 666916172 dns-tcp-responses-sent-ipv4: 45965521 dns-tcp-responses-sent-ipv6: 11356256