--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6487899509 dns-udp-queries-received-ipv6: 1261558856 dns-tcp-queries-received-ipv4: 183326506 dns-tcp-queries-received-ipv6: 35013164 dns-udp-responses-sent-ipv4: 6329616294 dns-udp-responses-sent-ipv6: 1260361542 dns-tcp-responses-sent-ipv4: 178794750 dns-tcp-responses-sent-ipv6: 35745919