--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4999228539 dns-udp-queries-received-ipv6: 1460309300 dns-tcp-queries-received-ipv4: 267079621 dns-tcp-queries-received-ipv6: 53837570 dns-udp-responses-sent-ipv4: 5045309061 dns-udp-responses-sent-ipv6: 1475815154 dns-tcp-responses-sent-ipv4: 264994465 dns-tcp-responses-sent-ipv6: 53753700