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DNSViz: A DNS visualization tool

costco.com

DNS Server Status

Delegation Information

NameParent zoneChild zoneAuthoritative IPs
Exists?Glue/additional recordsExists?
dbru.br.ns.els-gms.att.netyesN/A (out of bailiwick)yesA68.94.156.134
AAAA2001:1890:1ff:9f0:68:94:156:134
dmtu.mt.ns.els-gms.att.netyesN/A (out of bailiwick)yesA99.99.99.134
AAAA2001:1890:1ff:9f1:99:99:99:134