--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5215860149 dns-udp-queries-received-ipv6: 1316783192 dns-tcp-queries-received-ipv4: 319014226 dns-tcp-queries-received-ipv6: 57551305 dns-udp-responses-sent-ipv4: 5395476663 dns-udp-responses-sent-ipv6: 1350270392 dns-tcp-responses-sent-ipv4: 309323904 dns-tcp-responses-sent-ipv6: 57790865