Diagnostics for internet infrastructure
Tools for the people who run internet infrastructure.
Check, monitor and defend DNS, mail and security in one platform. GDPR compliant, hosted in Germany.
No account needed. Results in seconds.
120+
Blacklists checked
21
global DNS servers
109
attack service types
24/7
DMARC monitoring
100%
GDPR & EU compliant
One system instead of a dozen tabs
Scattered checkers give you isolated results without context. Provider.tools connects diagnostics, monitoring and defense — with history, alerts and API.
Scattered single tools
- A different result format for every tool
- No history, no records
- No notification when things change
- Ads, pop-ups, unknown operators
provider.tools
- One status system for every result
- History and monitoring for your assets
- Alerts via email, webhook and API
- Operated by Host-On Service Provider GmbH, Germany
The platform in four layers
From a single DNS record to the abuse workflow — every tool follows the same system and feeds the same data.
01
Network diagnostics
Check DNS propagation, TLS configuration, GeoIP and routing in seconds.
02
Email deliverability
Measure SPF, DKIM, DMARC and mail server setup — all the way to a 10/10 mail score.
03
Security & reputation
Blacklist status, our own DNSBL, reported attackers and abuse reports in one place.
04
Operations & integration
Test webhooks, wire up the REST API, document workflows — for daily operations.
Built for operations
Monitoring that works, not just displays.
Four modules watch your infrastructure around the clock — and step in before your customers notice.
Operations & monitoring
Your servers and URLs — watched from 3 datacenters
Agent-based server monitoring and uptime checks from Frankfurt, Falkenstein and Nürnberg. Majority decision instead of false alarms — and alerting that keeps working even when our main system fails.
Fair pricing, clear limits
All diagnostic tools are free. You pay for monitoring, automation and team.
Free
0 €/mo
forever
- All diagnostic tools
- 25 checks/day
- 1 DMARC domain
Starter
9,99 €/mo
yearly, else €12.99
- Unlimited checks
- DMARC: 5 domains
- 50 monitored hosts
- API: 1,000 calls
Professional
29,99 €/mo
yearly, else €39.99
- AI delisting: 5/mo
- DMARC: 15 domains
- Team: 10 members
- Whitelabel PDF
Business
79,99 €/mo
yearly, else €99.99
- AI delisting: 25/mo
- DMARC: 100 domains
- Team: 50 members
- API: 100,000 calls
Frequent questions
Is Provider.tools really free?
All diagnostic tools — DNS, SSL, blacklist, mail test, DMARC check, SPF, IP and ASN lookup — are free without registration. You only pay for monitoring, DMARC analysis, abuse management or team features.
How is this different from scattered online checkers?
One consistent system: the same status definitions, the same history, the same API. A blacklist check becomes monitoring, a DMARC check becomes ongoing analysis — without juggling disconnected tools.
How does the AI delisting agent work?
The agent (alpha) analyzes listings on 120+ blacklists, picks the right delisting method, fills self-service forms or sends emails with delivery tracking — and documents every step in an audit trail.
Where does my data run?
Hosting in Germany, AI processing via EU endpoints (Mistral AI on OVH). IPs are hashed, no transfer to third countries. Operated by Host-On Service Provider GmbH.
Can my team work together?
Yes. From Professional with role-based permissions (read/write per area), deduplication for background tasks, and up to 50 members on the Business plan.
Is there an API?
Yes — the entire platform is available via REST API: DNS, SSL, blacklist, DMARC, IP, ASN, abuse and webhooks. From Starter with API keys and documented limits.
Check your first domain.
No registration, no credit card. An account only if you want monitoring and history.