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astellas.com

https://astellas.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026
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astellas.com
Desktop screenshot of astellas.com
Mobile screenshot of astellas.com
Mobile

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Hosting Provider

Microsoft Azure
azure.microsoft.com

IP Address

40.71.11.150

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Boydton, United States

ASN

AS8075

Organization

Microsoft Azure App Service (eastus)

Server

Apache

CDN

CloudFront

Nameservers

a16-67.akam.net.a1-217.akam.net.a13-65.akam.net.a7-65.akam.net.+2 more

Performance

99

Core Web Vitals

Weight

First Contentful Paint
771 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.2 MB
57 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Adobe Experience Manager

Technology Stack

3 Technologies Detected

Frameworks

1
Alpine.js

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Apache

SEO Analysis

C64/100
20
9
0
Meta Tags8/15
Content6/12
Headings7/8
Technical20/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
A
astellas.comastellas.com

Homepage | Astellas

Astellas is a global life sciences company turning science into value for patients through transformative therapies. Discover how we're pioneering new health...

Description truncated.
Title Length19 chars

Recommended: 50-60 chars (~114px / 580px)

Description Length172 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    154 URLs

    robots.txt

    5 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    9/100
    Poor
    3 14 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:2%
    Words:801
    Token eff.:Optimal

    Structured Data

    Microdata

    Citation Readiness

    Opening Summary
    Descriptive Headings
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    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.
    C
    68/100
    11
    Passed
    4
    Critical
    0
    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
    15/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    14/15
    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
    7/15
    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.
    63/100
    B
    129 mg
    CO₂e / view
    1.2 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    147 mg
    vs
    Returning (cached)
    73 mg
    Annual (10K/mo)
    15.4 kg
    Emission Segments
    Data Center
    6 mg
    Network
    38 mg
    Device
    84 mg
    Resource Breakdown
    JavaScript
    906.3 KB
    Images
    23.6 KB
    CSS
    315.3 KB
    HTML
    25.6 KB
    Other
    1.6 KB
    Green Hosting Verified
    Microsoft Azure
    Provider Match
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    61%Fair
    Interactive

    HTTPS

    No WAF

    144d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    03.03.2026

    Valid Until

    17.09.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.astellas.comastellas.com

    SHA-256 Fingerprint

    8A:7C:FF:24:5A:E6:3E:2A:3D:6A:A8:43:16:5C:82:A6:D0:80:A3:46...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    176
    cache-control
    🟡 300s(max-age=300,stale-while-revalidate=3600)
    content-encoding
    📦 Gzip(gzip)
    content-length
    25951
    content-security-policy
    default-src 'self' *.pmsrv.co *.dotomi.com; script-src 'sel...
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    65

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    mxb-006dbe02.gslb.pphosted.com
    mxa-006dbe02.gslb.pphosted.com

    Domain Information

    astellas.com

    Domain Age
    21y 11m

    Created

    14.05.2004

    Expires

    14.05.2028

    Last Updated

    06.05.2025

    Registrar

    MarkMonitor Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    OneTrust

    Cookie Consent Banner
    OneTrust
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: OneTrust
    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.
    D
    56/100
    Not 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.
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Noto Serif + IBM Plex Sans

    WCAG Partial
    76/100
    Readability
    /30
    22/30

    20px · LH 1.60

    Hierarchy
    /20
    17/20

    3.05x ratio · ✓ H1→H6

    WCAG
    /25
    20/25

    1.93:1 min contrast

    Performance
    /25
    17/25

    2 fonts · 3 req

    Heading Font

    Noto Serif

    Serif61px

    Body Font

    IBM Plex Sans

    Sans20px

    Contrast Ratio

    1.93:1

    1 issue

    Reading Comfort

    ~34 CPL

    Narrow lines
    61px
    h1
    49px
    h2
    39px
    h3
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 12/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.9:1).

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

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    Buy on MyFontsVariable FontsFluid Type (rem)Flesch 12

    Color Palette

    8 unique colors
    Light
    #ffffff
    Background· 55.8%
    #d91e49
    Primary· 13%
    #1f2752
    Primary· 7.6%
    #094d89
    Primary· 7.1%
    #041d47
    Primary· 6.2%
    #7baec7
    Secondary· 4.6%
    #f5e6e8
    Secondary· 3.5%
    #46577b
    Primary· 2.2%

    Business & Marketing Stack

    2 Tools Detected

    Advanced

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    OneTrustEnterprise

    Cookie consent and privacy compliance tools

    2

    Categories

    2

    Total Tools

    1

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    27 Resources

    20
    Scripts
    7
    Styles
    3
    Async
    1
    Defer

    Top Script Sources

    assets.astellas.com(8)local(6)assets.adobedtm.com(2)cdn.cookielaw.org(2)rum.hlx.page(1)

    Website Identity

    astellas.com

    21 years old
    Location detected: 🇺🇸 United Statesvia ip
    MarkMonitor Inc.en

    Sponsored

    Last analyzed: 26 Apr 2026 at 00:24

    Historical Analysis & Change Tracking