lanzou.com website report
蓝奏·云存储
Last scanned
Overall score
Fair
About lanzou.com
lanzou.com is a website. The site is hosted on ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN.
Score profile
Top issues to fix
15 issues found · 6 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.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
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.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
+9 more issues — details in the sections below.
How it compares
lanzou.com scores higher overall than 8% 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
lanzou.com is built with jQuery.
Libraries (1)
Hosting & DNS
lanzou.com is hosted on ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN (servers registered in US).
- IP address
- 47.91.203.57
- ASN
- AS45102 · ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN
- IPv6
- Not supported
- HTTP
- HTTP/2
Show DNS record values
- A
- 47.91.203.57
- MX
- mx.ym.163.com
- NS
- ns2.dns.com, ns1.dns.com
TXT record contents are not republished; only their count is shown.
Security
lanzou.com uses TLS 1.2 with a certificate valid for 200 more days 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
lanzou.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
lanzou.com scores 100/100 for performance, with an estimated load time of 0.1 s. A visit emits an estimated 0.02 g of CO2 (grade A+).
Page weight
- HTML 15.0 KB
- JavaScript 32.9 KB
- CSS 8.0 KB
- Est. load
- 103 ms
- Response
- 103 ms
- Scripts / CSS
- 2 / 0
Carbon per visitA+
0.02 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
lanzou.com scores 50/100 for SEO and 45/100 for accessibility, with 7 SEO issues to fix.
Heading structure
No H1 found.
Image alt text
1 images · 1 without alt text · 0 lazy-loaded
Links
- Internal 15
- External 11
- Broken 1
SEO issues7
- Missing meta description
- 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 issues4
- Over half of images are missing alt text
- No H1 heading found
- Missing <html lang> attribute
- Missing viewport meta tag
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- 蓝奏·云存储
- Description
- Canonical
- Language
- 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://lanzou.com
- HTTP status
- 200
- Redirects
- https://lanzou.com
- Scanned
- Aug 24, 2026, 1:22 PM
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<a href="https://sitegraph.tech/site/lanzou-com"><img src="https://sitegraph.tech/badge/lanzou-com.svg" alt="lanzou.com on SiteGraph" width="190" height="20" /></a>See something wrong on this report? Request a correction or ask for something to be removed.
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Frequently asked questions about lanzou.com
- What is lanzou.com?
- lanzou.com is a website. The site is hosted on ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN.
- What technology does lanzou.com use?
- lanzou.com is built with jQuery.
- Who hosts lanzou.com?
- lanzou.com is hosted on ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN (servers registered in US).
- Is lanzou.com secure?
- lanzou.com uses TLS 1.2 with a certificate valid for 200 more days and sets 0 of 6 recommended security headers.
- Is lanzou.com protected against email spoofing?
- lanzou.com scores F for email security, with no SPF record and no DMARC policy.
- How does lanzou.com compare with similar sites?
- lanzou.com scores higher overall than 8% of the 163,243 sites we have scanned.
- What is lanzou.com's overall score?
- lanzou.com has an overall SiteGraph score of 65/100, combining SEO (50), performance (100), security (65) and accessibility (45).
Open Graph & Twitter