--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5358671600 dns-udp-queries-received-ipv6: 1507547431 dns-tcp-queries-received-ipv4: 300435852 dns-tcp-queries-received-ipv6: 91198767 dns-udp-responses-sent-ipv4: 5578737169 dns-udp-responses-sent-ipv6: 1618579328 dns-tcp-responses-sent-ipv4: 297685614 dns-tcp-responses-sent-ipv6: 91035030