indexo.dev

gershmanlab.com

.com crawl

First seen 2026-04-18 · Last seen 2026-05-09 · ok HTTP/1.1 200 6372 ms crawled 2026-05-12

US · 207.244.116.232 · AS30633 Leaseweb USA, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
CCNLab
Language
en
Generator
Bootply

Technology

Server
nginx

Third-party hosts loaded (1)

  • ajax.googleapis.com×1

Registration

Registrar
GoDaddy.com, LLC
Created
2020-12-12
Expires
2026-12-12 206 days left
Updated
2025-12-13
Name servers
  • ns1.us.opalstack.com
  • ns2.us.opalstack.com
  • ns3.us.opalstack.com

DNS records live

NS
  • ns1.us.opalstack.com
  • ns2.us.opalstack.com
  • ns3.us.opalstack.com
MX
  • 10 mx1.us.opalstack.com
  • 10 mx2.us.opalstack.com

Email authentication partial

SPF
v=spf1 include:spf.opalstack.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none
policy: none (monitoring only)
DKIM
  • dkim: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC66tTNLNBaIZACs46+mC+GvLihVFTg5Q0A6pSbUQf1TqXTPTH3Hb0FAlgtJaiui9IWEuzDqwRsRtAPrVGbhm…
selectors probed

Certificate (current)

R13
from 2026-05-02 to 2026-07-31
Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Linked from (2)