--- version: rssac002v3 service: a.root-servers.net start-period: '2019-03-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5668255790 dns-udp-queries-received-ipv6: 840386877 dns-tcp-queries-received-ipv4: 206162657 dns-tcp-queries-received-ipv6: 39623208 dns-udp-responses-sent-ipv4: 5534930464 dns-udp-responses-sent-ipv6: 839880649 dns-tcp-responses-sent-ipv4: 202822895 dns-tcp-responses-sent-ipv6: 39970412