--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7181182762 dns-udp-queries-received-ipv6: 1305537537 dns-tcp-queries-received-ipv4: 130862913 dns-tcp-queries-received-ipv6: 32342855 dns-udp-responses-sent-ipv4: 7127786301 dns-udp-responses-sent-ipv6: 1342366490 dns-tcp-responses-sent-ipv4: 125022933 dns-tcp-responses-sent-ipv6: 30008909