What technology does rum3.perf.linkedin.com use?

rum3.perf.linkedin.com is built with Nginx.

Is rum3.perf.linkedin.com secure (HTTPS)?

Yes. rum3.perf.linkedin.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Sep 20, 2026.

Who hosts rum3.perf.linkedin.com?

rum3.perf.linkedin.com is hosted on LINKEDIN - LinkedIn Corporation, US.

What is rum3.perf.linkedin.com's SEO score?

rum3.perf.linkedin.com scored 55/100 for SEO in the latest analysis (fair).

What is rum3.perf.linkedin.com's overall website score?

rum3.perf.linkedin.com has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.

rum3.perf.linkedin.com

Last scanned Jul 23, 2026, 12:53 PM

Overall score

Fair

Summary

This website uses Nginx hosted on LINKEDIN - LinkedIn Corporation, US. SEO is fair (55/100) and accessibility is excellent (95/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Missing meta description.

United States

Hosted on LINKEDIN - LinkedIn Corporation, US

Top issues to fix

14 issues found · 4 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

+8 more issues — details in the sections below.

SEO

7 issue(s) found

Performance

280 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider: LINKEDIN - LinkedIn Corporation, US
CDN provider: —
IP address: 108.174.10.20
ASN: AS14413 (LINKEDIN - LinkedIn Corporation, US)

DNS records

Type	Value
A	108.174.10.20
AAAA	2620:109:c002::6cae:a14
MX	—
TXT	—
NS	—
CAA	—
CNAME	any-na-lx.www.linkedin.com
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: DigiCert Inc
Subject: pop-lva1.www.linkedin.com
Valid from: Mar 20, 2026
Valid to: Sep 20, 2026
Days until expiry: 59
SAN domains: pop-lva1.www.linkedin.com, rum16.perf.linkedin.com, pop-tmu1.perf.linkedin.com, pop-tnd1.perf.linkedin.com, pop-vmi1.perf.linkedin.com, rum1.perf.linkedin.com, rum10.perf.linkedin.com, rum11.perf.linkedin.com, rum12.perf.linkedin.com, rum14.perf.linkedin.com, rum15.perf.linkedin.com, rum17.perf.linkedin.com, pop-tch1.perf.linkedin.com, rum18.perf.linkedin.com, rum19.perf.linkedin.com, rum2.perf.linkedin.com, rum20.perf.linkedin.com, rum3.perf.linkedin.com, rum4.perf.linkedin.com, rum5.perf.linkedin.com, rum6.perf.linkedin.com, rum7.perf.linkedin.com, rum8.perf.linkedin.com, pop-tln1.perf.linkedin.com, pop-nsg7.perf.linkedin.com, ac.perf.linkedin.com, pop-ela1.perf.linkedin.com, acpc.perf.linkedin.com, any-ap-test.perf.linkedin.com, any-ap.perf.linkedin.com, pop-ech2.perf.linkedin.com, pop-eda6.perf.linkedin.com, pop-edc2.perf.linkedin.com, pop-efr5.perf.linkedin.com, pop-ehk1.perf.linkedin.com, pop-ehk2.perf.linkedin.com, pop-ela4.perf.linkedin.com, pop-lva1.perf.linkedin.com, pop-ese2.perf.linkedin.com, pop-esg3.perf.linkedin.com, pop-esp2.perf.linkedin.com, pop-esv5.perf.linkedin.com, pop-esy1.perf.linkedin.com, pop-ety2.perf.linkedin.com, pop-idb2.perf.linkedin.com, pop-lor1.perf.linkedin.com, pop-lsg1.perf.linkedin.com, pop-ltx1.perf.linkedin.com, rum9.perf.linkedin.com, pop-vsh1.perf.linkedin.com, pop-vbe1.perf.linkedin.com

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 26 · H2 26 · H3 0

Links

9 internal · 0 external · 9 broken

Images

0 total · 0 missing alt

Scripts / Styles

1 scripts · 0 stylesheets

JS / CSS size

4.9 KB · 130 KB

Page size

356 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Missing meta description
Missing canonical link
Multiple H1 headings found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://rum3.perf.linkedin.com
Final URL: https://rum3.perf.linkedin.com
HTTP status: 404
HTTP version: HTTP/1.1
Response time: 273 ms
HTML size: 356 KB
Redirect chain: https://rum3.perf.linkedin.com

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Frequently asked questions

What technology does rum3.perf.linkedin.com use?: rum3.perf.linkedin.com is built with Nginx.
Is rum3.perf.linkedin.com secure (HTTPS)?: Yes. rum3.perf.linkedin.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Sep 20, 2026.
Who hosts rum3.perf.linkedin.com?: rum3.perf.linkedin.com is hosted on LINKEDIN - LinkedIn Corporation, US.
What is rum3.perf.linkedin.com's SEO score?: rum3.perf.linkedin.com scored 55/100 for SEO in the latest analysis (fair).
What is rum3.perf.linkedin.com's overall website score?: rum3.perf.linkedin.com has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.