Help & Troubleshooting
IP Ownership
What this is
Every public IP belongs to a network (identified by an ASN — Autonomous System Number) and is allocated through a regional registry (RIR). This lookup reports both: who operates the network and how the block is registered.
How to read your result
The ASN line names the operator (e.g. a cloud provider) and the announced prefix; the registry line shows the formal allocation. Use it to answer "whose infrastructure is this really?"
Common problems and how to fix them
Mail server IP belongs to a consumer/generic cloud range
How it shows up: Receivers distrust the IP by default; deliverability is poor despite correct SPF/DKIM/DMARC.
How to fix it: Send outbound mail through a reputable relay service, or use dedicated IP offerings designed for mail. Reputation follows the IP range as much as your domain.
Unknown IP appears in logs or in your DNS records
How it shows up: Traffic or records point somewhere you do not recognize.
How to fix it: Look up the ASN and registry data to identify the operator; for abuse, the registry entry lists the responsible contact. Update or remove any of your DNS records still pointing at infrastructure you no longer control.