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defcon.org

https://defcon.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026
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defcon.org

Sponsored

Hosting Provider

IP Address

50.230.231.78

Server Location

🇺🇸 Seattle, United States

ASN

AS7922

Organization

Comcast Cable Communications, LLC

Nameservers

dns-1.datamerica.com.dns-3.datamerica.com.

Performance

Page Speed

444 KB
37 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Comcast Cable Communications, LLC

Technology Stack

1 Technologies Detected

CSS Frameworks

1

SEO Analysis

A85/100
11
2
0
D
defcon.orgdefcon.org

DEF CON® Hacking Conference Home

The largest hacking and security conference with presentations, workshops, contests, villages and the premier Capture The Flag Contest.

Title Length32 chars

Recommended: 50-60 chars

Description Length135 chars

Recommended: 120-160 chars

Issues (0)

    Crawlability

    Sitemap
    robots.txt

    58 rules

    Sponsored

    Sponsored

    A+

    Security Score

    100%Excellent
    Static / Informational

    HTTPS

    No WAF

    29d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Hellenic Academic and Research Institutions CA

    Key Algorithm

    ECDSA (secp384r1) (384 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    21.03.2025

    Valid Until

    21.03.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (12)

    defcon.orgwww.defcon.orgdcnextgen.orgwww.dcnextgen.orgdefcongroups.orgwww.defcongroups.orginfocon.orgwww.infocon.org+4 more

    SHA-256 Fingerprint

    BA:83:9D:E6:EC:6A:1D:B9:95:39:CC:57:2A:71:C3:15:D4:83:BB:1D...

    Recommendations

    Security recommendation preview

    HTTP Headers

    Developer Console

    access-control-allow-origin
    same-origin
    cache-control
    🟡 600s(max-age=600)
    content-encoding
    zstd
    content-security-policy
    base-uri https://defcon.org/; object-src 'none'; script-src-...
    content-type
    text/html; charset=UTF-8
    cross-origin-embedder-policy
    require-corp; report-to='default'
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    73

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    mail-1.datamerica.com

    Domain Information

    defcon.org

    Domain Age
    32y 8m

    Created

    21.06.1993

    Expires

    20.06.2029

    Last Updated

    31.05.2025

    Registrar

    Gandi SAS

    DNSSEC
    Not Enabled

    Typography & Readability

    ration_oneregular + Helvetica Neue

    45/100
    Readability
    /30
    5/40

    12px · LH 1.00

    Hierarchy
    /20
    18/25

    3.94x ratio

    WCAG
    /25
    15/15

    Contrast: undefined

    Performance
    /25
    17/20

    System fonts

    Heading Font

    ration_oneregular

    Sans46px

    Body Font

    Helvetica Neue

    Sans12px

    Contrast Ratio

    --

    Reading Comfort

    ~37 CPL

    Needs attention
    46px
    h1
    35px
    h2
    32px
    h3
    12px
    p

    ❌ Critical: 12px body text is too small. Increase to at least 14px.

    ⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

    ✅ Strong hierarchy: Headlines are 3.9x larger than body text.

    ✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

    ✅ Smart font loading: Using font-display: swap prevents invisible text during load.

    ✅ Protected text on images: Using text-shadow for readability.

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    4 Resources

    1
    Scripts
    3
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    forum.defcon.org(1)

    Sponsored

    Last analyzed: 20 Feb 2026 at 06:27

    Historical Analysis & Change Tracking