--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5870918194 dns-udp-queries-received-ipv6: 832016911 dns-tcp-queries-received-ipv4: 171114061 dns-tcp-queries-received-ipv6: 34978744 dns-udp-responses-sent-ipv4: 5748372977 dns-udp-responses-sent-ipv6: 831351291 dns-tcp-responses-sent-ipv4: 167791984 dns-tcp-responses-sent-ipv6: 32315720