What technology does submarinecablemap.com use?

submarinecablemap.com is built with Google Analytics, Apache.

Is submarinecablemap.com secure (HTTPS)?

Yes. submarinecablemap.com uses TLS 1.2 with a certificate issued by Let's Encrypt, valid until Oct 16, 2026.

Who hosts submarinecablemap.com?

Hosting provider information for submarinecablemap.com is not available yet.

What is submarinecablemap.com's SEO score?

submarinecablemap.com scored 60/100 for SEO in the latest analysis (fair).

What is submarinecablemap.com's overall website score?

submarinecablemap.com has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.

submarinecablemap.com

Submarine Cable Map

Last scanned Jul 26, 2026, 12:49 PM

Overall score

Great

Summary

TeleGeography's comprehensive and regularly updated interactive map of the world's major submarine cable systems and landing stations. This website uses Apache. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.

TeleGeography's comprehensive and regularly updated interactive map of the world's major submarine cable systems and landing stations.

Top issues to fix

9 issues found · 3 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.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+3 more issues — details in the sections below.

SEO

6 issue(s) found

100

Performance

480 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.

Organization

Company details published in this site's own structured data.

TeleGeography's comprehensive and regularly updated interactive map of the world's major submarine cable systems and landing stations.

Meta tags

Title: Submarine Cable Map
Description: TeleGeography's comprehensive and regularly updated interactive map of the world's major submarine cable systems and landing stations.
Canonical
Language: en
Charset: UTF-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest: https://www.submarinecablemap.com/manifest.webmanifest

Technologies

Detected frameworks, languages, and tools.

Google Analytics Apache

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 1.2
Issuer: Let's Encrypt
Subject: *.submarinecablemap.com
Valid from: Jul 18, 2026
Valid to: Oct 16, 2026
Days until expiry: 79
SAN domains: *.submarinecablemap.com, submarinecablemap.com

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

4 scripts · 1 stylesheets

JS / CSS size

470 B · 0 B

Page size

1.4 KB

Robots.txt & Sitemap

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

SEO issues

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

Scan details

Requested URL: https://submarinecablemap.com
Final URL: https://www.submarinecablemap.com/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 480 ms
HTML size: 1.4 KB
Redirect chain: https://submarinecablemap.com → https://www.submarinecablemap.com/

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