penumbragroup.com

.com crawl

First seen 2026-04-23 · Last seen 2026-05-14 · ok HTTP/1.1 200 20850 ms crawled 2026-05-17

US · 208.85.188.240 · AS22663 Prominic.NET, Inc. · dead nameservers

Reputation 47/100 dead nameservers ghost cert no dmarc policy

sector other type homepage

HTML metadata

Title: Penumbra Group: Welcome to The Penumbra Group

Technology

Server: Lotus-Domino

Third-party hosts loaded (2)

ajax.googleapis.com×1
maxcdn.bootstrapcdn.com×1

Social

Contact

Email

Registration

Registrar

GoDaddy.com, LLC

Created

2001-12-05

Expires

2027-12-05 563 days left

Updated

2022-09-03

Name servers

ns12.zoneedit.com
ns13.zoneedit.com

DNS records dead

NS

ns12.zoneedit.com
ns13.zoneedit.com

MX

10 mx1-us1.ppe-hosted.com
20 mx2-us1.ppe-hosted.com

TXT

ppe-dc8e20016be590b852a6bc8c54add91b8dfff703

Email authentication weak

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current) ghost cert

R12

from 2026-04-06 to 2026-07-05

Expires in 46 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://penumbragroup.com/Penumbra/Web2.nsf?opendatabase

present

strict-transport-security
x-content-type-options

findings

short HSTS max-age
missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
strict-transport-security: max-age=604800