--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5754114656 dns-udp-queries-received-ipv6: 1118674350 dns-tcp-queries-received-ipv4: 296289559 dns-tcp-queries-received-ipv6: 90769044 dns-udp-responses-sent-ipv4: 5562970442 dns-udp-responses-sent-ipv6: 1117236493 dns-tcp-responses-sent-ipv4: 286205061 dns-tcp-responses-sent-ipv6: 91274920