--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3734010653 dns-udp-queries-received-ipv6: 419482362 dns-tcp-queries-received-ipv4: 100961401 dns-tcp-queries-received-ipv6: 14976574 dns-udp-responses-sent-ipv4: 3727973604 dns-udp-responses-sent-ipv6: 419444865 dns-tcp-responses-sent-ipv4: 101095209 dns-tcp-responses-sent-ipv6: 14999190