castlebiosciences.com

.com crawl

First seen 2026-04-14 · Last seen 2026-05-17 · ok HTTP/1.1 200 5450 ms crawled 2026-05-07

US · 198.202.211.1 · AS209242 Cloudflare London, LLC

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Castle Biosciences | Innovative Molecular Prognostic and Diagnostic Tests
Description
Castle Biosciences delivers advanced molecular diagnostics and prognostic tests - including genomic profiling for melanoma, skin cancers, Barrett’s esophagus and more - empowering clinicians and patients with personalized insights to guide better care decisions.
Language
en

Open Graph

title
Castle Biosciences | Innovative Molecular Prognostic and Diagnostic Tests
description
Castle Biosciences delivers advanced molecular diagnostics and prognostic tests - including genomic profiling for melanoma, skin cancers, Barrett’s esophagus and more - empowering clinicians and patients with personalized insights to guide better care decisions.

Technology

CDN
Cloudflare
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts
Third-party hosts loaded (18)
  • cdn.prod.website-files.com×95
  • cdn.jsdelivr.net×4
  • hubspotv2.use1-marketplace-1p-apps-prod-red.if.webflow.services×2
  • 117509548.intellimizeio.com×1
  • ajax.googleapis.com×1
  • api.intellimize.co×1
  • cdn-cookieyes.com×1
  • cdn.intellimize.co×1
  • cdnjs.cloudflare.com×1
  • d3e54v103j8qbb.cloudfront.net×1
  • fonts.googleapis.com×1
  • fonts.gstatic.com×1
  • js.hs-scripts.com×1
  • log.intellimize.co×1
  • tools.refokus.com×1
  • www.googletagmanager.com×1
  • www.tandfonline.com×1
  • www.usatoday.com×1

Social

Registration

Registrar
GoDaddy.com, LLC
Created
2007-09-10
Expires
2029-09-10 1209 days left
Updated
2026-03-09
Name servers
  • dns1.p02.nsone.net
  • dns2.p02.nsone.net
  • dns3.p02.nsone.net
  • dns4.p02.nsone.net
  • ns10.digicertdns.com
  • ns11.digicertdns.com
  • ns12.digicertdns.com
  • ns13.digicertdns.net
  • ns14.digicertdns.net
  • ns15.digicertdns.net

DNS records live

NS
  • dns1.p02.nsone.net
  • dns2.p02.nsone.net
  • dns3.p02.nsone.net
  • dns4.p02.nsone.net
  • ns10.digicertdns.com
  • ns11.digicertdns.com
  • ns12.digicertdns.com
  • ns13.digicertdns.net
  • ns14.digicertdns.net
  • ns15.digicertdns.net
MX
  • 0 castlebiosciences-com.mail.protection.outlook.com
TXT
Show 13 TXT records
  • ZOOM_verify_b_80g4ODQJKBNTG9sndAQw
  • docusign=e852face-3c3f-47d4-a318-0275a7f00e50
  • openai-domain-verification=dv-NuRSoOnI3spmlmvKc1ToI4oX
  • google-site-verification=DGzV-E4TZg1NMiBH8370OiabElUQSaWKeUQMuxJKveE
  • google-site-verification=DTu2u8I7Gg3FCKv9XQiCUkJfSFUAk21PTNlGUT492C0
  • google-site-verification=SFvbDn4LP3bRfJbOpLLWhlOETTNhhgxO7NbY1XQ8V8s
  • atlassian-domain-verification=KYnPGaTzPaT5Ji8WDqJaz2ICRCnwGjOhEdLX9IoeZ2ryyzY3CRhJlVwTHmMaUMoO
  • google-site-verification=SHq6QqNmxYECHVHlk6VNp9FWTQ3Nofx77Ki4PeSTPhI
  • airtable-verification=643f9069c4d847d783c7e8b134cb64d3
  • anthropic-domain-verification-s4q8sx=8egYifCx7F7IsmBUbrlL5xoPH
  • 00DC00000016sYY=1TBRP000000017N
  • MS=ms81801344
  • MS=ms84406384

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:spf.constantcontact.com include:mailgun.org include:_spf.psm.knowbe4.com include:aspmx.pardot.com mx include:_spf.salesforce.com include:39486913.spf01.hubspotemail.net ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:help1@castlebiosciences.com; ruf=mailto:help1@castlebiosciences.com; sp=reject;
policy: none (monitoring only) · sp=reject
DKIM
  • selector2: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCiDaSjhoU1SExGhxmuDY+GaUN8UikU2IMBPLj7IuXmE+hfRHfWW6chrpFKgDpNNpNpJSkzC0i3Sm2J7XlXxv…
selectors probed

Certificate (current)

WE1
from 2026-04-14 to 2026-07-13
Expires in 54 days

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.castlebiosciences.com/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (9)

Linked from (3)