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216.73.216.152
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na01-by1-obe.ptr.o365filtering.com
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Email
na01-by1-obe.ptr.o365filtering.com
AXFR zone transfer
Queried
just now
Not an apex domain
The domain na01-by1-obe.ptr.o365filtering.com is not the root of its zone.
Instead, try zone transfer on
o365filtering.com
.