nmap.org
Nmap: the Network Mapper - Free Security Scanner
Last scanned Jul 25, 2026, 2:25 PM · 1 view
Overall score
Excellent
Summary
Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. This website uses Apache hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing OpenGraph tags.
Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
- United States
- Hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG
Top issues to fix
5 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
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.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
SEO
2 issue(s) found
Performance
241 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Meta tags
- Title
- Nmap: the Network Mapper - Free Security Scanner
- Description
- Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
- Canonical
- https://nmap.org/
- Language
- en
- Charset
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- NOARCHIVE
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AKAMAI-LINODE-AP - Akamai Connected Cloud, SG
- CDN provider
- —
- IP address
- 50.116.1.184
- ASN
- AS63949 (AKAMAI-LINODE-AP - Akamai Connected Cloud, SG)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA |
|
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- Let's Encrypt
- Subject
- insecure.com
- Valid from
- Jul 20, 2026
- Valid to
- Oct 18, 2026
- Days until expiry
- 84
- SAN domains
- insecure.com, insecure.org, issues.nmap.com, issues.nmap.org, issues.npcap.com, issues.npcap.org, nmap.com, nmap.net, nmap.org, npcap.com, npcap.org, seclists.com, seclists.net, seclists.org, sectools.com, sectools.net, sectools.org, secwiki.com, secwiki.net, secwiki.org, svn.nmap.org, www.nmap.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 7 · H3 0
Links
38 internal · 45 external · 0 broken
Images
9 total · 0 missing alt
Scripts / Styles
2 scripts · 3 stylesheets
JS / CSS size
2.6 KB · 6.0 KB
Page size
19.2 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 4
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://nmap.org
- Final URL
- https://nmap.org
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 241 ms
- HTML size
- 19.2 KB
- Redirect chain
- https://nmap.org
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Frequently asked questions
- What technology does nmap.org use?
- nmap.org is built with Google Analytics, Apache.
- Is nmap.org secure (HTTPS)?
- Yes. nmap.org uses TLS 1.2 with a certificate issued by Let's Encrypt, valid until Oct 18, 2026.
- Who hosts nmap.org?
- nmap.org is hosted on AKAMAI-LINODE-AP - Akamai Connected Cloud, SG.
- What is nmap.org's SEO score?
- nmap.org scored 90/100 for SEO in the latest analysis (excellent).
- What is nmap.org's overall website score?
- nmap.org has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card