--- service: h.root-servers.net metric: traffic-volume version: rssac002v4 start-period: 2021-12-15T00:00:00Z dns-udp-queries-received-ipv4: 3194823515 dns-udp-queries-received-ipv6: 687952446 dns-tcp-queries-received-ipv4: 63118627 dns-tcp-queries-received-ipv6: 28563144 dns-udp-responses-sent-ipv4: 3191511272 dns-udp-responses-sent-ipv6: 687886084 dns-tcp-responses-sent-ipv4: 64756728 dns-tcp-responses-sent-ipv6: 29592768