--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3674558526 dns-udp-queries-received-ipv6: 425487453 dns-tcp-queries-received-ipv4: 154732521 dns-tcp-queries-received-ipv6: 15796759 dns-udp-responses-sent-ipv4: 3670847814 dns-udp-responses-sent-ipv6: 425419643 dns-tcp-responses-sent-ipv4: 154432047 dns-tcp-responses-sent-ipv6: 15902213