--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5253082526 dns-udp-queries-received-ipv6: 1226312515 dns-tcp-queries-received-ipv4: 317602432 dns-tcp-queries-received-ipv6: 49010772 dns-udp-responses-sent-ipv4: 5249223957 dns-udp-responses-sent-ipv6: 1250218772 dns-tcp-responses-sent-ipv4: 291838121 dns-tcp-responses-sent-ipv6: 48994687