--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5170237901 dns-udp-queries-received-ipv6: 1323040953 dns-tcp-queries-received-ipv4: 280531718 dns-tcp-queries-received-ipv6: 49087289 dns-udp-responses-sent-ipv4: 5328661592 dns-udp-responses-sent-ipv6: 1344965568 dns-tcp-responses-sent-ipv4: 277972236 dns-tcp-responses-sent-ipv6: 49101901