Reverse (PTR) lookup
172.67.141.121
172.67.141.121 has no reverse DNS name.
What name does this IP address claim, and does it point back? There is no reverse name at all. That matters if this address sends email.
- 1 warning
- Reverse name queried
- 121.141.67.172.in-addr.arpa
Tests
-
Warning
Reverse DNS record published
172.67.141.121 has no reverse name.
More info about “Reverse DNS record published”
Reverse DNS turns an IP address back into a name. Mail servers check it on every incoming connection: an address with no reverse name, or one whose name does not point back to it, looks like a home connection or a compromised machine, and its mail is more likely to be refused. The reverse name is set by whoever provides the IP address (your hosting company or ISP), not in your own DNS zone.
How we got this answer
Every question we asked, in order, with how long each server took to reply.
-
recursive resolver — asked 121.141.67.172.in-addr.arpa SOA
· 56 ms
The zone holding 121.141.67.172.in-addr.arpa is 67.172.in-addr.arpa. -
cruz.ns.cloudflare.com (108.162.192.88) — asked 121.141.67.172.in-addr.arpa PTR
· 18 ms
NXDOMAIN — the name does not exist.
Check next
Check something else
Rather not deal with this yourself?
dns.rehab is made by Marketstead. We run DNS, email and the rest of the back office for small businesses — farms, shops, studios, restaurants — and we read reports like this one for a living.
Email me this result
We send it once, with the link. No newsletter, no follow-ups.