De Online Rekenmachine

Free Dutch salary, VAT & mortgage calculators

Finance

deonlinerekenmachine.nl · Added June 18, 2026 · Last analysed June 18, 2026 · via · 57% unique tagline

Own this Launch?

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 18 June 2026; the live site may have changed since.

De Online Rekenmachine still has work before launch. What needs work: missing several security headers, incomplete legal pages, and incomplete email security.

Launched on Product Hunt on June 18, 2026. The site is hosted on Google LLC in the United States, with a domain registered in 2023. The crawl picked up 6 technologies on this site, covering email security, DNS providers, hosting, and seo. The stack includes DNSSmartHost, Google Search Console, and MailSpamProtection.

For context, it's one of 38 launches on this exact stack.

If you own this site, refresh the snapshot and see the full fix list any time →

3.3

StackScope Score

Poor

41/100 Launch Readiness

Partially ready

0/6 Security Headers

Poor

0/3 Legal

Missing

2/2 Web Standards

Complete

Vibe Score 0 · No AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (6)

Infrastructure

DNS	SiteGround DNS
Hosting	SiteGround (2)
Server	nginx

Email security	DNSSmartHost
	MailSpamProtection

Analytics & Marketing

SEO	Google Search Console

Infrastructure

Network

GOOGLE-CLOUD-PLATFORM - Google LLC, US

AS396982 · US

DNS

SiteGround DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Let's Encrypt

Valid 16 May 2026 to 14 Aug 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

2.7 years

Registered Sep 2023 · Tucows.com Co.

Email Security

✓

SPF ~all Soft-fail (~all). Common and accepted.

DKIM Not detected at common selectors. Your provider may use a custom one.

✗

DMARC p=none None (p=none). Monitoring only.

MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.

TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (1)

Cookies (1)

Name	Lifetime	Detected as
nevercache-b39818	expired	SiteGround

Readiness Breakdown How?

⚠

Custom title and meta description (partial) missing meta description

✓ Responsive viewport meta tag

✓ Favicon present

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

- Semantic HTML (nav, main, article)

AI Stance

Welcomes AI crawlers

✓ llms.txt published

✗ 3 AI bots blocked in robots.txt

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (4 URLs)

✗ security.txt

✓ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

Detection works best on English language sites.

Security Headers (0/6)

✗

Referrer-Policy

✗

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✗

X-Content-Type-Options

✗

Content-Security-Policy

✗

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Performance

240ms response time

Faster than 65% of sites

1 third-party domains loaded

Build

0 JS files

0 CSS files

1 Third-party domains

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.