HTTP Headers Analysis for https://www.twiml.org

Detected Technologies from Headers

See all in URL Inspect 2

AWS CloudFront

Vercel

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=63072000

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• Add X-Content-Type-Options: nosniff
• Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
• Consider adding Permissions-Policy to control browser features

Performance Headers

Accept-Ranges

Performance

bytes

Connection

Performance

close

accept-ranges: bytes
connection: close

Caching Headers

Age

Caching

4577

Cache-Control

Caching

public, max-age=0, must-revalidate

Etag

Caching

"1522cc72e1d37cde3b71f15469b47a31"

age: 4577
cache-control: public, max-age=0, must-revalidate
etag: "1522cc72e1d37cde3b71f15469b47a31"

Content Headers

Content-Disposition

Content

inline

Content-Length

Content

603479

Content-Type

Content

text/html; charset=utf-8

content-disposition: inline
content-length: 603479
content-type: text/html; charset=utf-8

Server Headers

Server

Vercel

server: Vercel

CORS Headers

Access-Control-Allow-Origin

Cors

*

access-control-allow-origin: *

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Fri, 24 Apr 2026 21:58:16 GMT

Via

Other

1.1 7a42d5513a5c17503737c4a606d41a16.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

QDSQN3Gm4Qp0MtQXTJpU5Zcx0kszVeTQNPQukrXiW9v9H5PWSgcEVw==

X-Amz-Cf-Pop

Other

IAD12-P5

X-Cache

Other

Miss from cloudfront

X-Matched-Path

Other

/docs/voice/twiml

X-Vercel-Cache

Other

HIT

X-Vercel-Id

Other

iad1::fwflt-1777067896627-04103702d5fa

date: Fri, 24 Apr 2026 21:58:16 GMT
via: 1.1 7a42d5513a5c17503737c4a606d41a16.cloudfront.net (CloudFront)
x-amz-cf-id: QDSQN3Gm4Qp0MtQXTJpU5Zcx0kszVeTQNPQukrXiW9v9H5PWSgcEVw==
x-amz-cf-pop: IAD12-P5
x-cache: Miss from cloudfront
x-matched-path: /docs/voice/twiml
x-vercel-cache: HIT
x-vercel-id: iad1::fwflt-1777067896627-04103702d5fa

Recommendations

Enable compression (gzip/brotli) to improve performance