Tools
Blacklist Checker
Scan domains, IPs, SMTP servers, and proxies for common blacklist and reputation signals—so you can fix issues before they impact deliverability.
Blacklist & DNSBL preview
Proxy Pool
Premium tier
Test managed proxies, monitor health, and push to production.
Proxies available
5,495
Requests
0
Active rate
0%
213.5.130.90:31332•SOCKS5•Premium
DNSBL unchecked • last tested —
UnknownUnchecked—
213.5.130.187:32650•SOCKS5•Premium
DNSBL clean • last tested 1h ago
SlowClean940ms
103.22.31.9:1080•HTTP•Standard
DNSBL clean • last tested 3m ago
ActiveClean220ms
Activity
Managed pool ready. Choose SMTP or Proxy.
What it does
Blacklist Checker helps you identify risky infrastructure and domains before you send. Use it to spot listings, quarantine problem assets, and keep your sending operation clean over time.
What it can check
- IP reputation and common DNSBL-style signals (where enabled)
- Proxy exit IPs and infrastructure health signals
- SMTP and sending endpoints for reputation risk indicators
- Domains for blacklist flags and deliverability warnings
Configuration options
- Choose what to scan: domains, IPs, proxies, SMTP inventory, or imported lists
- Select default sources or use your deployment’s configured reputation providers
- Set recheck cadence and cooldown windows for ongoing monitoring
- Auto-tag, quarantine, or remove risky assets based on your workflow (deployment-dependent)
- Export results and share reports for ops and compliance needs
Recommended workflows
- Run checks after importing new proxy or SMTP inventory
- Verify infrastructure before launching high-volume campaigns
- Re-check when bounce rates spike or inbox placement drops
- Combine with IP Lookup to add geo context and deeper routing decisions