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IP & Hosting Lookup
See who hosts any domain. Domain Doctor resolves the IP and reveals the hosting provider, network (ASN), location and reverse DNS.
VASTROX Hosting, Email, DNS & SSL
Let VASTROX fix everything above for you
You do not have to fix this alone. Our team sets up your SPF, DKIM, DMARC, SSL, DNS and security headers correctly, then hosts you on fast NVMe infrastructure so your domain scores an A and stays there.
- Every failing check fixed and verified
- Hosting, business email, DNS and SSL in one place
- Free migration from your current provider
What the IP & Hosting Lookup checks
Every domain lives on a server with an IP address, owned by a hosting provider and announced by a network (ASN). Knowing who hosts a site helps with migrations, abuse reports, competitive research and troubleshooting.
Domain Doctor resolves your domain to its IP, looks up the hosting provider and ASN, geolocates the server, and checks the reverse DNS (PTR) record, including whether it forward-confirms, which matters for email trust.
Check your domain in three steps
Common IP & Hosting Lookup problems
- Reverse DNS (PTR) missing on a mail-sending IP
- PTR that does not forward-confirm (no FCrDNS)
- Domain still resolving to a former host after migration
VASTROX Hosting
Host with a provider you can trust
Cloud hosting, VPS and game servers on fast global infrastructure, with real support and clean IP reputation.
- Fast NVMe cloud hosting and VPS
- Clean, dedicated IP reputation
- Free migration from your current host
Hosting, VPS, business email and game servers. Free migration. Real support.
Frequently asked
What is an ASN?
An Autonomous System Number identifies the network that announces an IP range on the internet, usually the hosting provider or ISP.
Why does reverse DNS matter?
Mail servers check the PTR record of your sending IP. A missing or non-matching PTR hurts deliverability and can cause outright rejection.