17u.cn
同程旅行_旅游_旅游线路_旅行_出国旅游_自驾游_周边游_旅游网站
Last scanned Aug 1, 2026, 8:00 AM · 6 views
Overall score
Fair
Summary
同程旅行(LY.COM)是一家专业的一站式旅游预订平台，提供近万家景点门票、特价机票、出国旅游、周边游、自驾游及酒店预订服务；专业旅游线路服务、让您的旅行更��… This website uses jQuery. SEO is fair (60/100) and accessibility is fair (70/100). Security scores poor (25/100) and performance good (80/100). Top issue: Title longer than 60 characters.
同程旅行(LY.COM)是一家专业的一站式旅游预订平台，提供近万家景点门票、特价机票、出国旅游、周边游、自驾游及酒店预订服务；专业旅游线路服务、让您的旅行更安心！
Top issues to fix
16 issues found · 3 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 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.
4 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+10 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
2.87 s
Security
HTTPS & header checks
Accessibility
3 issue(s) found
Score history
+9 overall since Jul 25, 2026
- Overall
- 58
- SEO
- 60
- Security
- 25
- Performance
- 80
- Accessibility
- 70
Organization
Company details published in this site's own structured data.
同程旅行(LY.COM)是一家专业的一站式旅游预订平台，提供近万家景点门票、特价机票、出国旅游、周边游、自驾游及酒店预订服务；专业旅游线路服务、让您的旅行更安心！
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- 同程旅行_旅游_旅游线路_旅行_出国旅游_自驾游_周边游_旅游网站
- Description
- 同程旅行(LY.COM)是一家专业的一站式旅游预订平台，提供近万家景点门票、特价机票、出国旅游、周边游、自驾游及酒店预订服务；专业旅游线路服务、让您的旅行更安心！
- Canonical
- Language
- Charset
- utf-8
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- wx.17u.cn
- Valid from
- Jul 15, 2026
- Valid to
- Oct 13, 2026
- Days until expiry
- 72
- SAN domains
- api.elong.com, apmfront.17u.cn, app.ly.com, appgateway.ly.com, appnew.ly.com, autodiscover.ly.com, bjs-travel.17u.cn, css.40017.cn, cw.17u.cn, dttrip.cn, ebk.17u.cn, ebkapi.17u.cn, file.40017.cn, fileakamai.40017.cn, flights.17u.cn, ghotel.ly.com, guanjia.tcent.cn, hotel.17u.cn, hotel.elong.com, ihotel.elong.com, job.ly.com, join.ly.com, js.40017.cn, jy.17u.cn, m.17u.cn, m.dttrip.cn, m.elong.com, m.elongstatic.com, m.ly.com, mail.ly.com, mall.dttrip.cn, masapm.ly.com, mhotel.elong.com, mhr.ly.com, moa.17u.cn, moa.tcly.cn, mobile-api2011.elong.com, mobileapi.ly.com, mwf.17usoft.com, nb-google.elong.com, okr.17u.cn, oss.17usoft.com, pavo.elongstatic.com, pavoaka.elongstatic.com, pavoakamai.elongstatic.com, pavoquic.elongstatic.com, pic5.40017.cn, pic5aka.40017.cn, quic-hotel.17u.cn, quic-tcmapi.elong.com, s.ly.com, savior.elong.com, servicegw.ly.com, starfish-toca.tcent.cn, static.40017.cn, tcauth.17u.cn, tcflightfrontapi.17usoft.com, tchl.17u.cn, tcmapi.elong.com, tcmobileapi.17usoft.com, tcsk.17u.cn, toca-gw.17u.cn, toca-message.17u.cn, toca-sentry.17u.cn, toca-stream-api.17u.cn, toca-stream.17u.cn, toca-wps.17u.cn, toca.17u.cn, toca.17usoft.com, train.17u.cn, vbk.17u.cn, vstgif.17u.cn, vstlog.17u.cn, vstlog.17usoft.com, wiki.17u.cn, www.dttrip.cn, www.elong.com, www.ly.com, www.tongchengbx.com, www.travelgo.com, wx.17u.cn, wxap.17u.cn, wxcdn.17u.cn, wxcf.17u.cn, wxquic.17u.cn, x.elong.com, xapiakamai.elong.com, xlog.elong.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 5 cookie(s) observed
Content & assets
Headings
H1 1 · H2 14 · H3 43
Links
198 internal · 74 external · 20 broken
Images
145 total · 51 missing alt
Scripts / Styles
21 scripts · 2 stylesheets
JS / CSS size
19.5 KB · 1.6 KB
Page size
209 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- 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 issues
- More than 20% of images are missing alt text
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://17u.cn
- Final URL
- https://www.ly.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 2.87 s
- HTML size
- 209 KB
- Redirect chain
- https://17u.cn → https://www.ly.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does 17u.cn use?
- 17u.cn is built with jQuery.
- Is 17u.cn secure (HTTPS)?
- Yes. 17u.cn uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 13, 2026.
- Who hosts 17u.cn?
- Hosting provider information for 17u.cn is not available yet.
- What is 17u.cn's SEO score?
- 17u.cn scored 60/100 for SEO in the latest analysis (fair).
- What is 17u.cn's overall website score?
- 17u.cn has an overall SiteGraph score of 58/100, combining SEO, performance, security, and accessibility.
- Has 17u.cn's score changed over time?
- 17u.cn's overall score has improved by 9 points (from 49 to 58) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card