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216.73.216.14
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o1.sendgridmail.tm2app.com
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Email
o1.sendgridmail.tm2app.com
AXFR zone transfer
Queried
just now
Not an apex domain
The domain o1.sendgridmail.tm2app.com is not the root of its zone.
Instead, try zone transfer on
sendgridmail.tm2app.com
.