--- version: rssac002v3 service: a.root-servers.net start-period: '2017-05-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3950307784 dns-udp-queries-received-ipv6: 384530663 dns-tcp-queries-received-ipv4: 165124199 dns-tcp-queries-received-ipv6: 8335108 dns-udp-responses-sent-ipv4: 3897490891 dns-udp-responses-sent-ipv6: 379473295 dns-tcp-responses-sent-ipv4: 163204737 dns-tcp-responses-sent-ipv6: 8338272