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Generator Labs

Blacklist, Certificate & TLS Monitoring·generatorlabs.com

Generator Labs provides infrastructure monitoring for email deliverability, SSL/TLS certificates, and DNS security. It continuously checks IPs, domains, and certificates against hundreds of blacklists (RBLs, URIBLs) and certificate authorities, sending real-time alerts via multiple channels. The product also offers a REST API, team management, and compliance-oriented reporting. It was formerly known as RBLTracker.

What it's for

Monitor IP addresses and domains against blacklists to protect email deliverabilityTrack SSL/TLS certificate expiration across domainsValidate certificate chains, hostnames, and CAA recordsMonitor Microsoft SNDS sender reputationMonitor domains against PhishTank phishing feedsGenerate formal PDF compliance reports for certificate infrastructureMonitor internal/private certificates via on-premise agentsInstant free lookup of IP/domain blacklist status or SSL certificate status

Features 18

Blacklist/RBL/URIBL monitoring across 100+ data sources
CAA record tracking
Certificate Compliance Report (PDF) mapping to PCI DSS 4.0, HIPAA, ISO 27001:2022, NIST SP 800-53, SOC 2 controls
Complete REST API with PHP, Node.js, and Python libraries
Custom data sources and custom run times (higher-tier plans)
Free instant blacklist and SSL certificate check tools (no signup required)
Full IPv6 support
Global monitoring from multiple locations
Hostname verification for certificates
Internal CA / private certificate monitoring via on-premise agents
Live and historical reporting with shareable public reports
MCP Server for connecting AI assistants (Claude, Cursor) to monitoring data
Microsoft SNDS monitoring
Multi-channel alerts (Email, SMS, Slack, Discord, PagerDuty, webhooks)
PhishTank phishing feed monitoring
SSL/TLS certificate expiration and chain validation monitoring
Team management with contact groups, sub-accounts, role-based access
Two-factor authentication

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

LanguagesEnglish

Forsmall teams, larger teams/enterprises, sysadmins, security engineers

CompanyGenerator Labs, Inc. · 2012

Integrations

SlackDiscordPagerDutyStripeClaudeChatGPTCopilotCursor

Complianceself-reported

GDPRCCPAPCI DSS Level 1

Resources

Pricing

Blacklist Monitoring offers a permanent free tier, two fixed monthly plans ($8 and $16), and a pay-per-check 'Ultimate' plan at $0.005/check. Certificate Monitoring is billed separately at $0.01 per host per day with no contracts or minimums. Free plan requires no credit card.

FreeFree

Free Forever tier

1 host monitored, 48-hour check interval, 100+ RBL & URIBL sources

Professional$8/mo

For Small Teams

20 hosts monitored, 24-hour check interval

Enterprise$16/mo

For Larger Teams

50 hosts monitored, 12-hour check interval

UltimateQuote

Pay per check - Best Value, marked as Best Value plan

Unlimited hosts, user-defined check intervals

Certificate MonitoringQuote

Separate product pricing stated in llms.txt for Certificate Monitoring