--- version: rssac002v4 service: a.root-servers.net start-period: '2021-11-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5569726757 dns-udp-queries-received-ipv6: 1591429341 dns-tcp-queries-received-ipv4: 282273379 dns-tcp-queries-received-ipv6: 64671997 dns-udp-responses-sent-ipv4: 5579221564 dns-udp-responses-sent-ipv6: 1602068664 dns-tcp-responses-sent-ipv4: 278620846 dns-tcp-responses-sent-ipv6: 64588193