icudp.com website report
URIBL.COM - Realtime URI Blacklist
Last scanned · 3 views
Overall score
Fair
About icudp.com
icudp.com is a website. It describes itself as “URIBL.COM is a Realtime URI Blacklist (RHSBL) served via DNS to identify Unsolicitied Bulk and Commercial Email (UCE/UBE) based on the…”.
Score profile
Top issues to fix
14 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
+8 more issues — details in the sections below.
How it compares
icudp.com scores higher overall than 6% of the 163,243 sites we have scanned.
vs. All scanned sites
163,243 sitesThe dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.
Technology stack
icudp.com is built with Nginx and Google Analytics.
Analytics (1)
Servers (1)
Hosting & DNS
- IP address
- —
- ASN
- —
- IPv6
- Not supported
- HTTP
- HTTP/1.1
Show DNS record values
TXT record contents are not republished; only their count is shown.
Security
icudp.com serves a certificate that fails verification (hostname mismatch) and sets 0 of 6 recommended security headers.
Security headers0 of 6 set
- HSTSForces HTTPS
- CSPBlocks injected scripts
- X-Frame-OptionsStops clickjacking
- X-Content-TypeStops MIME sniffing
- Referrer-PolicyLimits URL leakage
- Permissions-PolicyRestricts browser features
TLS certificate
- Names covered
- 2
- Cookies set
- 0
Email security
icudp.com scores F for email security, with no SPF record and no DMARC policy.
- SPFNot set
No SPF record: anyone can claim to send mail from this domain.
- DMARCNot set
No DMARC policy: forged mail is not told to be rejected.
- MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
- BIMINot set
Not published (optional).
Performance & carbon
icudp.com scores 90/100 for performance, with an estimated load time of 1.6 s. A visit emits an estimated 0.01 g of CO2 (grade A+).
Page weight
- HTML 15.6 KB
- JavaScript 564 B
- Est. load
- 1.64 s
- Response
- 1.64 s
- Scripts / CSS
- 3 / 1
Carbon per visitA+
0.01 g CO2 per uncached view
Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.
SEO & accessibility
icudp.com scores 55/100 for SEO and 70/100 for accessibility, with 7 SEO issues to fix.
Heading structure
No H1 found.
Image alt text
3 images · 1 without alt text · 0 lazy-loaded
Links
- Internal 6
- External 21
- Broken 19
SEO issues7
- Meta description longer than 160 characters
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues3
- More than 20% of images are missing alt text
- No H1 heading found
- Missing viewport meta tag
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- URIBL.COM - Realtime URI Blacklist
- Description
- URIBL.COM is a Realtime URI Blacklist (RHSBL) served via DNS to identify Unsolicitied Bulk and Commercial Email (UCE/UBE) based on the links within the email. URIBL.COM is enabled by default in the popular opensource SpamAssassin.
- Canonical
- Language
- en-US
- Robots meta
Crawl files
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
Structured data
No JSON-LD types declared.
- Microdata items
- 0
- RDFa items
- 0
Scan
- Final URL
- https://icudp.com
- HTTP status
- 200
- Redirects
- https://icudp.com
- Scanned
- Aug 24, 2026, 1:22 PM
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Frequently asked questions about icudp.com
- What is icudp.com?
- icudp.com is a website. It describes itself as “URIBL.COM is a Realtime URI Blacklist (RHSBL) served via DNS to identify Unsolicitied Bulk and Commercial Email (UCE/UBE) based on the…”.
- What technology does icudp.com use?
- icudp.com is built with Nginx and Google Analytics.
- Is icudp.com secure?
- icudp.com serves a certificate that fails verification (hostname mismatch) and sets 0 of 6 recommended security headers.
- Is icudp.com protected against email spoofing?
- icudp.com scores F for email security, with no SPF record and no DMARC policy.
- How does icudp.com compare with similar sites?
- icudp.com scores higher overall than 6% of the 163,243 sites we have scanned.
- What is icudp.com's overall score?
- icudp.com has an overall SiteGraph score of 59/100, combining SEO (55), performance (90), security (25) and accessibility (70).
Open Graph & Twitter