IPv4 Reputation Radar.

Monitor your IP blocks against 75+ major blacklists in real time. Get alerted the moment a listing appears — before it impacts your email delivery, hosting customers, or infrastructure.

75+
Blacklists Checked
~15s
Full /24 Check
Faster Than Competitors
$9.99
Per Month to Start
FREE INSTANT CHECK
Is Your IP Blacklisted?
Enter any IPv4 address and get results across 75+ major blacklists in seconds — no account, no signup, no cost.
Checking 75 blacklists in parallel...
0
Listed
0
Clean
0
Checked
100 Score
View Full Report ↓
🔔
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✓ No credit card ✓ 75+ blacklists ✓ Instant alerts
Full Report

Full Blacklist Report

Results
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Category
Status
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Enter an IP address above and click Check Now to see full blacklist results here.
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Why IPv4 Reputation Radar

Built Different.

We built RepRadar from the ground up on dedicated infrastructure — not a shared API wrapper. That means real speed, real accuracy, and features competitors can't match.

5× Faster Than HetrixTools
A full /24 block checked across 75 blacklists in ~15 seconds. Our multi-IP parallel architecture fires all lookups simultaneously — no queuing, no waiting.
🛡️
75+ Blacklists
Spamhaus ZEN, Barracuda, SORBS, SpamCop, UCEProtect, CBL, BlockList.de, Abusix, and 67 more. Every major list that matters to email deliverability and hosting.
📡
CIDR Block Monitoring
Monitor entire IP blocks — from a single /32 all the way up to a /19 (8,192 IPs). Check every IP in your block on a schedule, not just spot checks.
🔔
Instant Alerts
Get notified the moment a listing appears via email, SMS, Slack, or Discord. Know before your customers do — before it impacts operations.
📊
Full History & Reports
Track listing and delisting events over time. Export reports to Excel. See exactly when an IP was listed, which list, and when it was resolved.
🔗
IPv4 Hub Integration
If you lease or list IPs through IPv4 Hub, your blocks are automatically suggested for monitoring. One click to add your entire inventory or active leases.
Simple Pricing

Pay for What You Have.

Priced by block size — not by number of monitors. You own a /22, you pay for a /22. No counting monitors, no confusing tiers.

Starter
Free / 5 days
Up to /24 · 256 IPs
  • 1 monitor
  • 75 blacklists checked
  • 24hr check frequency
  • Email alerts
  • 15 days history
Start Free Trial
Pro
$49.95 / mo
Up to /19 · 8,192 IPs
  • 50 monitors
  • 75 blacklists checked
  • Down to 1hr frequency
  • All notification channels
  • 90 days history
Get Started

All plans include a 5-day free trial. No credit card required to start.

Coverage

75+ Blacklists Checked.

Every major list that affects email deliverability, hosting reputation, and network access.

Spamhaus ZEN
Spamhaus SBL
Spamhaus XBL
Spamhaus PBL
Spamhaus CSS
Spamhaus DROP
Barracuda
Barracuda Rep
SpamCop
SORBS DNSBL
SORBS SMTP
SORBS HTTP
SORBS SOCKS
SORBS WEB
SORBS ZOMBIE
CBL Abuseat
UCEProtect L1
UCEProtect L2
UCEProtect L3
Backscatterer
PSBL
DroneBL
EFnet RBL
Lashback UBL
RATS Dyna
RATS NoPtr
RATS Spam
SpamRATS All
BlockList.de
Mailspike BL
Mailspike Z
Tor Exit Nodes
Sectoor Tor
WPBL
Nixspam
SEM Black
SEM Fresh
SEM Backscatter
Abusix Mail
Abusix Exploit
Abusix Policy
Abusix Blacklist
NordSpam
0Spam
0Spam DNSBL
InterServer
RBL.JP
Hostkarma Black
Hostkarma Brown
Invaluement SIP
Invaluement SIP24
Senderscore BL
GBUdb Truncate
Swinog DNSRBL
Spamgrouper
MegaRBL
JustSpam
Mipspace
Project Honeypot
WSBL
IBM DNS BL
Cymru Bogons
Spamhaus EDROP
SpamCop BL
EFnet
Lashback

Start Monitoring Your IPs Today.

5-day free trial. No credit card required. Setup takes under 2 minutes.

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