⚡ Free instant scan — no account required

Your domain’s health,
revealed in seconds.

Paste any domain. Get a full security and availability snapshot instantly — SSL, DNS, uptime, HTTP headers, security score, and more.

🐒 dommonkey — domain scanner
Connecting…
—
Overall health score
// What we check

Everything that matters,
in one snapshot.

9 critical checks run in seconds. Plain English results — no raw data to decode.

🛡️
Security Score
Instant letter grade from A+ to F based on SSL, headers, DNS, and open ports.
FREE SCAN
🔒
SSL Certificate
Validity, expiry date, issuer, and days remaining. Never get caught with an expired cert.
FREE SCAN
📡
Ping / Uptime
Is your server responding? Live reachability check with response time.
FREE SCAN
🌐
DNS Records
A, MX, NS, TXT records — with missing security entries flagged automatically.
FREE SCAN
📋
HTTP Headers
HSTS, CSP, X-Frame-Options and more — security headers grade in one score.
FREE SCAN
🛡
Email Security
DMARC and SPF detection — flags domains vulnerable to email spoofing.
FREE SCAN
🔍
WHOIS & Expiry
Domain registration info and expiry — never lose a domain by surprise.
FREE SCAN
🚪
Port Status
Checks ports 80, 443, 22, 25 — flags unexpectedly open ports as security risks.
FREE SCAN
🌍
DNS Propagation
Check if DNS changes spread across 10 global resolvers — US, EU, Asia, and more.
FREE SCAN
🔔
Continuous Monitoring
Get alerted the moment SSL expires, uptime drops, or DNS records change.
PRO
// How it works

Three steps. Zero friction.

01

Paste your domain

No signup. No credit card. Type any domain and hit scan. Works on any domain, anywhere in the world.

02

Get your health snapshot

9 checks run in parallel in seconds. Each result explained in plain English — not raw data you have to decode yourself.

03

Monitor continuously

Upgrade to Solo or Pro to be alerted the moment your SSL expires, uptime drops, or DNS records change.

Also on iPhone, iPad & Mac

The original NetProbe app gives you professional network tools in your pocket — traceroute, speed test, network scanner, and more.

Download on the
App Store
// Pricing

Simple, honest pricing.

Start free. Upgrade when continuous monitoring matters. No surprise charges.

⏱ Early access pricing — locked in forever for founding members.

FREE
$0
Quick snapshot, no account needed.
  • Instant domain snapshot
  • All 9 checks per scan
  • Security Score grade
  • No monitoring
  • No alerts
Scan a domain →
SOLO — FOUNDING PRICE
US$1.99/mo  SAVE 38% YEARLY
One site. Fully watched. Less than a coffee a year.
  • 1 domain monitored
  • All checks continuously
  • Email alerts on any issue
  • SSL expiry warnings
  • DNS change detection
  • ⏱ Every 5 minutes
YEARLY PLAN
or
MONTHLY PLAN
✉ Join waitlist for early access →
PRO — FOUNDING PRICE
US$4.99/mo  SAVE 35% YEARLY
For developers managing multiple client sites.
  • Up to 20 domains
  • Email alerts
  • SSL expiry warnings
  • DNS change detection
  • Uptime history
  • ⏱ Every 1 minute
YEARLY PLAN
or
MONTHLY PLAN
✉ Join waitlist for early access →

⏳ Payments launching soon — join the waitlist below to lock in founding prices forever.

// FAQ

Common questions.

How do I check if my SSL certificate is expired?+
Enter your domain in the scanner above and click Scan. The SSL Certificate check instantly shows whether your certificate is valid, expired, or expiring soon — including the exact expiry date and issuing authority. No account required.
How do I check DNS propagation?+
DomMonkey checks DNS propagation across 10 global resolvers simultaneously — including Google (8.8.8.8), Cloudflare (1.1.1.1), Quad9, OpenDNS, and servers in the US, EU, Germany, and Australia.
How do I check if my domain has DMARC and SPF?+
Enter your domain and hit Scan. The Email Security check automatically looks up your SPF TXT record and DMARC record. If either is missing, your domain is vulnerable to email spoofing and you will be warned immediately.
Is there a free domain monitoring tool?+
Yes. DomMonkey's free plan lets you run an instant 9-point health scan on any domain with no account required. For continuous monitoring with email alerts, paid plans start at US$1.99/month or US$15/year.
What HTTP security headers should my website have?+
At minimum: Strict-Transport-Security (HSTS) to force HTTPS, Content-Security-Policy (CSP) to prevent XSS, and X-Frame-Options to prevent clickjacking. DomMonkey checks all three and flags any that are missing.
How do I monitor SSL certificate expiry automatically?+
DomMonkey's Solo plan (US$15/year) monitors your SSL certificate and sends email alerts 30, 7, and 1 day before it expires. An expired SSL certificate shows a browser security warning that blocks visitors — automated monitoring prevents that.
Free
to scan any domain
9
checks in ~6 seconds
US$1.99/mo
founding price, locked forever
// Founding member pricing — limited spots

Lock in your
founding price now.

Payments launch soon. Join the waitlist and lock in US$1.99/month forever — the price goes up when we launch publicly.

✓ US$1.99/month forever — never pay the higher launch price
✓ First month of Pro free when payments go live
✓ No credit card required — just your email
✓ Unsubscribe anytime — no spam, ever
✓ You're on the list! We'll be in touch when we launch.
🔒 No spam. Unsubscribe anytime. Built by Sylvain @ MyRCBox.