cksource.com

HTML metadata

Title: CKSource | Creator of the world’s most comprehensive rich text editing solution
Language: en
Generator: Hexo 7.3.0

Open Graph

url: https://cksource.com/
title: Creator of the world’s most comprehensive rich text editing solution | CKSource
description: Creator of the world’s most comprehensive <span class='u-color-tang-5'>rich text editing</span> solution

Technology

CDN: Amazon CloudFront
Server: AmazonS3

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

Registration

Registrar

NameCheap, Inc.

Created

2008-11-22

Expires

2026-11-22 186 days left

Updated

2025-10-23

Name servers

ns-1182.awsdns-19.org
ns-1942.awsdns-50.co.uk
ns-212.awsdns-26.com
ns-593.awsdns-10.net

DNS records live

NS

ns-1182.awsdns-19.org
ns-1942.awsdns-50.co.uk
ns-212.awsdns-26.com
ns-593.awsdns-10.net

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

TXT

Show 14 TXT records

validity-domain-monitoring=JQj6YgHW1by3LqWMImyd3dYTs
MS=2B478E03AB5B72AD6C69E53447204D7CF176AB91
anthropic-domain-verification-nbyzhn=FF3sNS1PoOjsFaPMrXRnPp8rA
bw=aErERkTOkeaFfVHGMjVp7X3sXnLhATBw7QTu50SHEhPX
figma-domain-verification=db5164bb52e9664904007c6934bda9d3deda894d6eab2c23180cb5e2d1276bf0-1768812560
google-site-verification=GBV4jGJPHIHELV7eJA8ME-cXz0zeBQmRcgpEdzRq8BA
notion-domain-verification=X8h9gMlvnbBaMgbOMmAYjzgcqngfJn4PebW9w9Qtgya
openai-domain-verification=dv-zrZd3f7t7mPn8s2gWCo2Hrmf
segment-site-verification=Egbrm97VfEJpLN180PJLtdbwFabhqC4b
sending_domain1018062=10dad8805933897615be8daba6c01466e20b3b1e0042faec16ce45226fea25b3
sending_domain1018062=3ba8611f733dc58dec8edda203d7e4c56a287a07013e44bdc38f9502cad0957a
sending_domain1018062=9058a1e70a7306b467a44880b0b1cc657e1639abb3d18e2db4072083540bb5da
sending_domain1018062=9cc427f6588905da0d22713c489d548d2230a3a22a265e2cbde999ddcece96db
sending_domain1018062=bc0e1a25f8f712082c0a98a92e6314ed1ef4d7f6ab12d5762f87c4ca2373b20a

Email authentication strong

SPF

v=spf1 mx ip4:67.227.136.92/32 ip4:173.199.183.188/30 include:_spf.google.com include:servers.mcsv.net include:mail.zendesk.com include:_spf.salesforce.com include:et._spf.pardot.com ~all

softfail (~all)

DMARC

v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@dmarc.everest.email; ruf=mailto:dmarc_fr@dmarc.everest.email;

policy: quarantine

DKIM

Show 4 DKIM selectors

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAodIYhUbN+ev2A++CDCAaPrRpim6yY2yfsxC7/SGUT1P7pTAM3VVPt/Hf7Bp/NzcwAvYuOwvJBzpmy5…
k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuUQWoAoDmK5SlU5iYOwYqIz8R0zfvB+12IMO+9Jl73tGvXUhmx1VUtHek8CcvXe362YvQmlZECB/MNQAgd…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvB/ZIALLNIaLI/GqGKbscElHiFbg9GCzSoAslbGPp01kCPv0pEwGYAxoRyfHaCEMeTLvsbC0XrAW4P53Yx…

selectors probed

Certificate (current)

Amazon RSA 2048 M01

from 2026-04-12 to 2026-10-27

Expires in 160 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://cksource.com/

present

strict-transport-security
x-frame-options
x-content-type-options
referrer-policy

findings

missing Content Security Policy
missing Permissions Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
strict-transport-security: max-age=31536000

Links to (4)

Linked from (1)

ckeditor.com×4