--- service: h.root-servers.net metric: traffic-volume version: rssac002v4 start-period: 2021-04-14T00:00:00Z dns-udp-queries-received-ipv4: 3895259994 dns-udp-queries-received-ipv6: 1070045911 dns-tcp-queries-received-ipv4: 120617828 dns-tcp-queries-received-ipv6: 70575141 dns-udp-responses-sent-ipv4: 3890956493 dns-udp-responses-sent-ipv6: 1069782466 dns-tcp-responses-sent-ipv4: 123361783 dns-tcp-responses-sent-ipv6: 72843286