53.com

.com toplist crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 1979 ms crawled 2026-05-18

DE · 23.201.249.191 · AS16625 Akamai Technologies, Inc.

Reputation 95/100 weak security headers

Classifying

Technology

CDN: Akamai

Fonts

Google Fonts

Third-party hosts loaded (1)

fonts.googleapis.com×1

Registration

Registrar

Network Solutions, LLC

Created

1995-11-17

Expires

2026-11-16 180 days left

Updated

2025-11-10

Name servers

a1-80.akam.net
a10-65.akam.net
a13-66.akam.net
a14-67.akam.net
a24-64.akam.net
a7-65.akam.net

DNS records live

NS

a1-80.akam.net
a10-65.akam.net
a13-66.akam.net
a14-67.akam.net
a24-64.akam.net
a7-65.akam.net

MX

10 mxa-00642301.gslb.pphosted.com
10 mxb-00642301.gslb.pphosted.com

TXT

Show 32 TXT records

ibmid=98bc9af9-59f8-448b-8b4e-e26e6204452a
box-domain-verification=dd175ce55972bac2ce57e6039fde061407625c609fc96d902da1c102152b846a
wiz-domain-verification=55c88504ab90f86fa0ea13c108cf9204bccbdb020e4e5b86e6e18c94f0c511eb
MS=ms90581392
k5DkM3lP828oNHroYuAIlzvjzUyCg3-4GFqVB6dr9r8VRP34XsfHpQ
jamf-site-verification=DJHtS2TmVDJVa7MNNOpBRQ
pendo-domain-verification=iADp3ke1rcMR2cnWdY5XgmYeQNg
speakeasy-domain-verification-40sber=T3E6uvXFEpgTiKq6ezdoYQT27
Dynatrace-site-verification=0c59fba2-b0d2-47a7-9aa7-3c7948a8bf2b__1q5lagg7s628c7j66ojrguitev
recordh1-domain-verification=tT9r65oCprXEk2MjuPanwYoMeMyCRDtRv5jomHXAovPD25JH
cisco-ci-domain-verification=21092e5df31b8fed56199b03ab747f4c69d6973126e79af4b1aa1f2ddace2dc8
google-site-verification=5HibfSPCvhT-kWIv-pGQcRFtd8ePaEmpKeoigAnveOg
apple-domain-verification=ewGpXpa7m9Xl9AsO
facebook-domain-verification=8t1lpn9acmr5jnwcwgoffdunavc3xp
NLtT9DLuc1q91NEL8ZvKu7m9AQYpzjVBEog2DNaecZs=
atlassian-domain-verification=hltWWN6HmXIOKq8G7bT/FhswZtscFsuqkGLaNqBF8RK77XJ5xHWcgSJDxKRkUSEy
h1-domain-verification=jKqnte8HkHwCAF5ALShCaemFq5d4Nj73EkGXhvfjB8KjazWM
pinterest-site-verification=95eb5462292506f452d8cf2570f3085a
google-site-verification=m7KrDC5ejE8g_xWzI-kEupEJwkmJljVh5iGIE65Hn_I
docusign=96e10571-23c3-4153-b54a-0ed4b93f983b
airtable-verification=09195a144cb9b46cff740c5db01d15b9
MS=DB4B4400DE8511FD910129D9B561A9AAC6052E62
atlassian-domain-verification=pgukZ7b9Z/pnX2NqppgAuV4keEx7rJHFnZBFQzD4XaiKZa8tGb110ia0cpufBz9/
docusign=e2af1352-7ebc-45fc-a4ba-98813818cf58
miro-verification=6001b096ad777db85da43c981217db92b9d8ff41
hubspot-domain-verification=OWZiN2E4NWYtMWNhZi00NmI5LWIxYjYtNTc2YmI0ZWM3NWE4
adobe-idp-site-verification=47a3ed544a5df0d56db5a10110e355b077be7204f2520d7d7f29bebc145efb39
google-site-verification=If2PSoGUBcXMrrUCjIMNVx0NDn2CYVEGd4w-U7-W3LM
citrix.mobile.ads.otp=9qwp1zgti5clryw8fo2c5
gAI9GsN4jKw5HqV0ImvZGsGJkTidY9cyOcJPy8+FXRHa8ysGfUw3ZFV/SZUbXM4U/SwJBZ0MZaEUKA4D7/hygw==
h1-domain-verification=E6VYviy6KgeumUUuryyk84XUCcK3vTSKELr4pvBYeR2CBCiB
figma-domain-verification=ef1cfadf00fe846021ee5e59cc8e153e09a249754ca59f67bbb69df67736084f-1725994777

Email authentication strong

SPF

v=spf1 mx include:spf.53.com include:spf2.53.com -all

strict (-all)

DMARC

v=DMARC1; p=reject; sp=reject; fo=1; pct=100; ri=3600; rua=mailto:DMARC-Reports@53.com; ruf=mailto:DMARC-Reports@53.com

policy: reject (enforced) · sp=reject

DKIM

s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5RThov1/YgegT63WBrw3qouOzM4ARhsYjDAG59OFRYqibnjaJQtkJgS7mjMgkOh8koiM/6TFy58co3PEkH…
s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDGAs17HykoK08LbLfNiMUmyN+ftczltF74l4ou8yW+uMvdOYCSDPLbWFBCUfzvc/eO61MhKm/C3Hfw4sZgsCOuLm…

selectors probed

Certificate (current)

Sectigo Public Server Authentication CA OV R36

from 2025-12-11 to 2026-12-12

Expires in 206 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.53.com/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy