--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5407453587 dns-udp-queries-received-ipv6: 1412779950 dns-tcp-queries-received-ipv4: 307453469 dns-tcp-queries-received-ipv6: 59904894 dns-udp-responses-sent-ipv4: 5393379812 dns-udp-responses-sent-ipv6: 1430346737 dns-tcp-responses-sent-ipv4: 298567237 dns-tcp-responses-sent-ipv6: 59932835