--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4954196727 dns-udp-queries-received-ipv6: 1690841984 dns-tcp-queries-received-ipv4: 310649209 dns-tcp-queries-received-ipv6: 88809087 dns-udp-responses-sent-ipv4: 4823906220 dns-udp-responses-sent-ipv6: 1695051853 dns-tcp-responses-sent-ipv4: 290994781 dns-tcp-responses-sent-ipv6: 88772888