The module validates an IPv4 or IPv6 address and asks the server resolver for its PTR record. It does not connect to the target address.
TEST / PTR0BPS / MODULE
REVERSE DNS LOOKUP
Resolve a validated IPv4 or IPv6 address to the PTR hostname published by its address owner. DNS only — no port scan or target fetch.
REFERENCE / FAQ
COMMON QUESTIONS
What does a reverse DNS lookup do?
It asks DNS for the PTR record associated with a validated IPv4 or IPv6 address. A PTR hostname may not exist even when the address is active.
Does this tool connect to the IP address?
No. It performs a DNS PTR query only. It does not fetch a web page, scan ports or attempt to identify services on the address.
Why can the result be different from forward DNS?
PTR records are controlled by the address owner or hosting provider and do not have to match every A or AAAA record that points at the address.
PTR data is normally controlled by the address owner or hosting provider and may be absent or intentionally generic.
PRACTICAL / EXAMPLES
PUT THE NUMBER IN CONTEXT.
Short examples using the same units and assumptions as this module.
A public server IP may resolve to a provider hostname such as a host or edge node name.
A valid public IP can legitimately return no PTR record; this is not a failed IP connection test.