HTTP Headers Analysis for https://st.ntppool.org

Detected Technologies from Headers

See all in URL Inspect 2

Apache

Varnish

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31557600

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

Vary

Performance

Accept-Encoding

accept-ranges: bytes
connection: close
vary: Accept-Encoding

Caching Headers

Age

Caching

0

Etag

Caching

"10d-652a998cf256e-gzip"

Last-Modified

Caching

Mon, 25 May 2026 19:43:46 GMT

age: 0
etag: "10d-652a998cf256e-gzip"
last-modified: Mon, 25 May 2026 19:43:46 GMT

Content Headers

Content-Length

Content

269

Content-Type

Content

text/html

content-length: 269
content-type: text/html

Server Headers

Server

Apache/2.4.62 (Unix)

server: Apache/2.4.62 (Unix)

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400

Date

Other

Wed, 16 Sep 2026 04:27:00 GMT

Via

Other

1.1 varnish, 1.1 varnish

X-Backend

Other

dala

X-Backend-Front

Other

ssl_shield_dallas_tx_us

X-Cache

Other

MISS, MISS

X-Cache-Hits

Other

0, 0

X-Cluster-Zone

Other

dala

X-Served-By

Other

cache-dfw-kdfw8210110-DFW, cache-lga21920-LGA

X-Timer

Other

S1789532821.846370,VS0,VE47

alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
date: Wed, 16 Sep 2026 04:27:00 GMT
via: 1.1 varnish, 1.1 varnish
x-backend: dala
x-backend-front: ssl_shield_dallas_tx_us
x-cache: MISS, MISS
x-cache-hits: 0, 0
x-cluster-zone: dala
x-served-by: cache-dfw-kdfw8210110-DFW, cache-lga21920-LGA
x-timer: S1789532821.846370,VS0,VE47

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching