--- service: h.root-servers.net metric: traffic-volume version: rssac002v4 start-period: 2021-04-20T00:00:00Z dns-udp-queries-received-ipv4: 5700131381 dns-udp-queries-received-ipv6: 1340882388 dns-tcp-queries-received-ipv4: 125262358 dns-tcp-queries-received-ipv6: 70647011 dns-udp-responses-sent-ipv4: 5656171713 dns-udp-responses-sent-ipv6: 1340732463 dns-tcp-responses-sent-ipv4: 127808639 dns-tcp-responses-sent-ipv6: 72803023