--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5818395827 dns-udp-queries-received-ipv6: 1207621044 dns-tcp-queries-received-ipv4: 285196092 dns-tcp-queries-received-ipv6: 111201238 dns-udp-responses-sent-ipv4: 5632141523 dns-udp-responses-sent-ipv6: 1206077327 dns-tcp-responses-sent-ipv4: 273571925 dns-tcp-responses-sent-ipv6: 111345519