opencellid.org

https://opencellid.org· First analyzed 18 May 2026· Updated 18 May 2026

Export

opencellid.org

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.90.147

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

lily.ns.cloudflare.com.ian.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

696 ms10%

Speed Index

905 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

336 KB

66 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Plausible Analytics Sentry

Other

Leaflet Mapbox GL

CSS Frameworks

Bootstrap

Tailwind CSS

Icon Libraries

Font Awesome Ionicons

Libraries

jQueryv1.10.2

Other

Modernizr

CDN

Cloudflare

SEO Analysis

D44/100

Meta Tags8/15

Content8/12

Headings1/8

Technical12/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

opencellid.orgopencellid.org

OpenCelliD - Largest Open Database of Cell Towers & Geolocation - b...

OpenCelliD is the largest Open Database of Cell Towers & their locations. You can geolocate IoT & Mobile devices without GPS, explore Mobile Operator coverag...

Title truncated. Description truncated.

Title Length81 chars

Recommended: 50-60 chars (~498px / 580px)

Description Length168 chars

Recommended: 120-160 chars

Issues (3)

• Title is too long (81 chars, ~498px). Will be truncated in search results.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (27/28) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Local SEO

Local Search Readiness

10/100

Poor

3 13 2

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

Sponsored

AI & LLM Readiness

F36/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

0/25

Citation

11/25

AI Bot Access

14/14 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

code blocksnavheader/footer

Text ratio:4%

Words:214

Token eff.:Too Short

Sections/1K:9.3

Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary55w

Descriptive Headingsavg 5.5w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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Sponsored

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.

56/100

Passed

Critical

Warnings

Images & Alt Text

10/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

13/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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

4/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 recommendations

•Accessibility recommendation preview...

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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.

57/100

A+

34 mg

CO₂e / view

336.1 KB

Page Weight

90%

Cleaner Than

New Visitor

39 mg

Returning (cached)

19 mg

Annual (10K/mo)

4.1 kg

Emission Segments

Data Center

2 mg

Network

10 mg

Device

22 mg

Resource Breakdown

JavaScript

158.5 KB

Images

14.6 KB

CSS

147.2 KB

HTML

3.5 KB

Other

12.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

26%Critical

Interactive

HTTPS

WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

25.03.2026

Valid Until

23.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

opencellid.org*.opencellid.org

SHA-256 Fingerprint

79:63:4D:C0:3B:18:10:98:51:88:25:F3:8D:08:1C:F4:1D:F4:E0:D2...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇫🇷 Paris

9fdde8fdffe1d118-CDG

content-encoding

zstd

content-type

text/html; charset=UTF-8

date

Mon, 18 May 2026 21:21:11 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt3.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

opencellid.org

Domain Age

18y 5m

Created

09.12.2007

Expires

09.12.2026

Last Updated

14.11.2025

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

51/100

Mobile Friendly1 breakpoint

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=1.0, maximum-scale=1.0, user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue

WCAG Partial

65/100

Readability

/30

21/30

18px · LH 1.67

Hierarchy

/20

6/20

WCAG

/25

19/25

2.36:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans18px

Contrast Ratio

2.36:1

2 issues

Reading Comfort

~43 CPL

Narrow lines

35px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.4:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Flesch 39

Color Palette

5 unique colors

2.9:1 Fail Light

#ffffff

Background· 59.5%

#9b9791

Other· 2.7%

#f2e9e2

Primary· 26.200000000000003%

#d8d2c5

Secondary· 7.9%

#b2cd9f

Secondary· 3.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

PlausibleSMB

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)bower_components(5)plausible.io(1)maps.locationiq.com(1)tiles.locationiq.com(1)

Website Identity

opencellid.org

18 years old

Location detected: 🇨🇦 Canadavia ip

Cloudflare, Inc.📧 Google Workspaceen

Social Profiles

X (Twitter)

Sponsored

Last analyzed: 18 May 2026 at 21:21

Historical Analysis & Change Tracking