51lanz.com website report
短信平台_短信接口_督查管理系统_督查督办平台_政企通管理系统_移动信息化项目定制开发_浪驰软件官网
Last scanned · 1 view
Overall score
Fair
About 51lanz.com
51lanz.com is a website. It describes itself as “浪驰软件是国内领先的移动信息化服务提供商，15年行业资历，为客户提供督查管理系统，督查督办平台，政企通管理系统、移动信息化项目定制开发、会员短信平台，短信验证码接口等服务。欢迎客户免费试用体验，客服电话4006883208”.
Score profile
Top issues to fix
15 issues found · 5 high priority
TLS certificate expires in -1421 days
SecurityRenew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.
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.
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.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
+9 more issues — details in the sections below.
How it compares
51lanz.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
51lanz.com is built with jQuery.
Libraries (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
51lanz.com serves a certificate that fails verification (expired) and sets 1 of 6 recommended security headers.
Security headers1 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
- 3
- Cookies set
- 0
Email security
51lanz.com does not receive email, but does not fully block others from sending mail in its name.
No MX records: this domain does not receive mail.
- 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
51lanz.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 28.2 KB
- JavaScript 2.6 KB
- CSS 4.1 KB
- Est. load
- 1.61 s
- Response
- 1.61 s
- Scripts / CSS
- 13 / 10
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
51lanz.com scores 60/100 for SEO and 55/100 for accessibility, with 7 SEO issues to fix.
Heading structure
One H1: good.
Image alt text
17 images · 11 without alt text · 0 lazy-loaded
Links
- Internal 13
- External 9
- Broken 20
SEO issues7
- Title longer than 60 characters
- Meta description longer than 160 characters
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues3
- Over half of images are missing alt text
- Missing <html lang> attribute
- Missing viewport meta tag
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- 短信平台_短信接口_督查管理系统_督查督办平台_政企通管理系统_移动信息化项目定制开发_浪驰软件官网
- Description
- 浪驰软件是国内领先的移动信息化服务提供商，15年行业资历，为客户提供督查管理系统，督查督办平台，政企通管理系统、移动信息化项目定制开发、会员短信平台，短信验证码接口等服务。欢迎客户免费试用体验，客服电话4006883208
- 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://51lanz.com
- HTTP status
- 200
- Redirects
- https://51lanz.com
- Scanned
- Aug 24, 2026, 1:22 PM
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Frequently asked questions about 51lanz.com
- What is 51lanz.com?
- 51lanz.com is a website. It describes itself as “浪驰软件是国内领先的移动信息化服务提供商，15年行业资历，为客户提供督查管理系统，督查督办平台，政企通管理系统、移动信息化项目定制开发、会员短信平台，短信验证码接口等服务。欢迎客户免费试用体验，客服电话4006883208”.
- What technology does 51lanz.com use?
- 51lanz.com is built with jQuery.
- Is 51lanz.com secure?
- 51lanz.com serves a certificate that fails verification (expired) and sets 1 of 6 recommended security headers.
- Is 51lanz.com protected against email spoofing?
- 51lanz.com does not receive email, but does not fully block others from sending mail in its name.
- How does 51lanz.com compare with similar sites?
- 51lanz.com scores higher overall than 6% of the 163,243 sites we have scanned.
- What is 51lanz.com's overall score?
- 51lanz.com has an overall SiteGraph score of 59/100, combining SEO (60), performance (90), security (30) and accessibility (55).
Open Graph & Twitter