Geo + ASN RBL checks Network info

IP lookup

Check block ownership, reverse DNS, geo location, ASN, and free DNS blocklist (RBL) status for any public IPv4 or IPv6 address.

Network
Range, net name, org, and abuse contacts
Reputation
Spamhaus, SpamCop, SORBS, PSBL, UCEPROTECT
Geo
Country, city, ISP, hosting/proxy flags

Lookup

Enter a public IPv4 or IPv6 address. Private/reserved ranges are blocked for safety.

RBL checks apply to IPv4. Geo data is sourced from ip-api.com.

Results

Network, geo, and blocklist results for the IP you entered.

Run a lookup to see IP details here.

FAQ

Quick answers to common questions.

Which blocklists do you check?
Spamhaus ZEN, SpamCop, SORBS, PSBL, and UCEPROTECT Level 1 via DNS lookups. Results are indicative — always verify with the list operator.
Why is geo missing sometimes?
Geo data comes from a free lookup service with rate limits. If it is unavailable, network and RBL results still return.

Fix it with step-by-step guides

Found an issue with this tool? These Tips & Tricks walk through the fix on Windows, macOS, and Linux.

Browse full topic libraries:

Windows · Networking macOS · Networking Linux · Networking Windows · Security macOS · Security Linux · Security

Tips & Tricks hub

Tools

Need help with mail deliverability or abuse cases?

We can review DNS, mail routing, SPF/DKIM/DMARC, and IP reputation issues with a structured remediation plan.

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