--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5036278440 dns-udp-queries-received-ipv6: 1440284215 dns-tcp-queries-received-ipv4: 306130470 dns-tcp-queries-received-ipv6: 65633841 dns-udp-responses-sent-ipv4: 5041148583 dns-udp-responses-sent-ipv6: 1443816969 dns-tcp-responses-sent-ipv4: 302710845 dns-tcp-responses-sent-ipv6: 65646436