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dso.org

https://dso.org· First analyzed 20 May 2026· Updated 20 May 2026
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dso.org
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Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

34.232.124.39

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Nginx

CDN

CloudFront

Nameservers

ns49.domaincontrol.com.ns50.domaincontrol.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
747 ms10%
Speed Index
971 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
855 KB
50 requests

Image Optimization

ResponsiveCloudinary
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
SilverStripe

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Frameworks

1
Angular

Other

1
AOS (Animate On Scroll)

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

C61/100
18
8
0
Meta Tags5/15
Content10/12
Headings8/8
Technical13/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
D
dso.orgdso.org

Detroit Symphony Orchestra

The most accessible orchestra on the planet.

Title Length26 chars

Recommended: 50-60 chars (~164px / 580px)

Description Length44 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    11/100
    Poor
    3 12 2

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

    Sponsored

    AI & LLM Readiness

    F37/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    0/25
    Citation
    10/25

    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
    Text ratio:3%
    Words:2,021
    Token eff.:Optimal

    Structured Data

    Microdata

    Citation Readiness

    Opening Summary209w
    Descriptive Headingsavg 3.4w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    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.
    B
    72/100
    12
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    15/20
    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
    8/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 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.
    63/100
    B
    86 mg
    CO₂e / view
    855.0 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    99 mg
    vs
    Returning (cached)
    49 mg
    Annual (10K/mo)
    10.4 kg
    Emission Segments
    Data Center
    4 mg
    Network
    25 mg
    Device
    57 mg
    Resource Breakdown
    JavaScript
    142.7 KB
    Images
    395.2 KB
    CSS
    190.5 KB
    HTML
    74.0 KB
    Other
    52.5 KB
    Green Hosting Verified
    Amazon Web Services (AWS)
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    291d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Amazon

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    07.02.2026

    Valid Until

    07.03.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    dso.org*.dso.org

    SHA-256 Fingerprint

    53:9A:F8:F6:67:FB:28:B8:16:A0:E8:83:C1:6A:E3:0F:27:21:EC:8D...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🟡 300s(public, max-age=300, stale-while-revalidate=3600, no-transfo...)
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Wed, 20 May 2026 12:38:46 GMT
    server
    nginx
    via
    1.1 0d64966b5ac3442e25f46b5f01c0c958.cloudfront.net (CloudFr...
    Good Warning Issue

    Email Infrastructure

    Barracuda

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    d178242b.ess.barracudanetworks.com
    d178242a.ess.barracudanetworks.com

    Domain Information

    dso.org

    Domain Age
    27y 11m

    Created

    08.06.1998

    Expires

    07.06.2027

    Last Updated

    22.07.2025

    Registrar

    GoDaddy.com, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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.
    B
    73/100
    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
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    ff-good-web-pro-condensed + ff-good-web-pro

    WCAG Partial
    73/100
    Readability
    /30
    21/30

    16px · LH 1.50

    Hierarchy
    /20
    20/20

    6.25x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    16/25

    2 fonts

    Heading Font

    ff-good-web-pro-condensed

    Sans100px

    Body Font

    ff-good-web-pro

    Sans16px

    Contrast Ratio

    1:1

    5 issues

    Reading Comfort

    ~41 CPL

    Narrow lines
    100px
    h1
    48px
    h2
    54px
    h3
    16px
    p

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

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 26/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 6.2x larger than body text.

    Buy on MyFontsFlesch 26

    Color Palette

    14 unique colors
    7.29:1 AAA Light
    #ebebeb
    Other· 14.8%
    #4d4b48
    Text· 6.3%
    #e41736
    Primary· 9.2%
    #403732
    Text· 7.8%
    #b38784
    Secondary· 5.7%
    #281d1c
    Secondary· 4.7%
    #925d57
    Secondary· 4.2%
    #a12b34
    Accent· 1.9%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    18 Resources

    17
    Scripts
    1
    Styles
    11
    Async
    1
    Defer

    Top Script Sources

    googletagmanager.com(4)d1tvesmslcwsw2.cloudfront.net(2)youtube.com(2)google-analytics.com(2)connect.facebook.net(2)

    Website Identity

    dso.org

    27 years old
    Location detected: 🇺🇸 United Statesvia ip
    GoDaddy.com, LLC📧 Barracudaen

    Sponsored

    Last analyzed: 20 May 2026 at 12:39

    Historical Analysis & Change Tracking