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tunnelblick.net

https://tunnelblick.net· First analyzed 02 May 2026· Updated 02 May 2026
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tunnelblick.net
Desktop screenshot of tunnelblick.net
Mobile screenshot of tunnelblick.net
Mobile

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Hosting Provider

pair Networks

IP Address

216.92.115.10

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Pittsburgh, United States

ASN

AS7859

Organization

pair Networks

Server

Apache

CDN

Cloudflare

WAF

Cloudflare

Nameservers

terin.ns.cloudflare.com.leah.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
439 ms10%
Speed Index
571 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
7 KB
5 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
pair Networks
CDN
Cloudflare

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

D53/100
16
6
2
Meta Tags7/15
Content10/12
Headings0/8
Technical15/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
T
tunnelblick.nettunnelblick.net

Tunnelblick | Free open source OpenVPN VPN client server software f...

Tunnelblick | Free open source OpenVPN VPN client server software for macOS

Title truncated.
Title Length75 chars

Recommended: 50-60 chars (~463px / 580px)

Description Length75 chars

Recommended: 120-160 chars

Issues (2)

  • • Title is too long (75 chars, ~463px). Will be truncated in search results.
  • • Missing H1 tag — every page should have exactly one H1

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

113 URLs

robots.txt

14 rules

Sitemap reference found

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F32/100
Bot Access
19/25
Machine Read.
5/25
Schema Data
0/25
Citation
8/25

AI Bot Access

13/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
navheader/footer
Text ratio:22%
Words:198
Token eff.:Too Short
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary53w
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
B
72/100
9
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
12/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
78/100
A+
<0.001 g
CO₂e / view
6.9 KB
Page Weight
95%
Cleaner Than
New Visitor
<0.001 g
vs
Returning (cached)
<0.001 g
Annual (10K/mo)
84 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
<0.001 g
Resource Breakdown
Images
3.6 KB
CSS
1.1 KB
HTML
2.1 KB
Green Hosting Verified
pair Networks
Provider Match
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

100%Excellent
Static / Informational

HTTPS

No WAF

84d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

27.04.2026

Valid Until

26.07.2026

Subject Alternative Names (2)

tunnelblick.netwww.tunnelblick.net

SHA-256 Fingerprint

BC:D6:E2:1F:3F:15:D6:EB:13:71:DC:FC:9F:3B:BB:9D:0F:A9:7F:A3...

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 60s(max-age=60)
connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
1898
content-security-policy
default-src 'none'; style-src https://tunnelblick.net https:...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

tunnelblick01.mail.pairserver.com

Domain Information

tunnelblick.net

Domain Age
20y 11m

Created

28.05.2005

Expires

28.05.2027

Last Updated

19.05.2021

Registrar

NameCheap, Inc.

DNSSEC
Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
D
50/100
Mobile Friendly
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG AA
72/100
Readability
/30
21/30

16px · LH --

Hierarchy
/20
9/20
WCAG
/25
22/25

5:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Helvetica Neue

Body Font

Helvetica Neue

Sans16px

Contrast Ratio

5:1

WCAG AA (≥4.5:1)

Reading Comfort

~80 CPL

Wide lines
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Wide lines: ~80 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Hard to read: Flesch score 48/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 48

Color Palette

6 unique colors
2.43:1 Fail Light
#ffffff
Background· 81.7%
#a2a7aa
Other· 2.3%
#ddded4
Secondary· 2.2%

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Scripts & Styles

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

tunnelblick.net

20 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.en

Sponsored

Last analyzed: 02 May 2026 at 23:02

Historical Analysis & Change Tracking

tunnelblick.net Technology Stack - Built With Tailwind CSS, Apache | StackOptic | StackOptic