mersenne.org

.org crawl

First seen 2026-04-21 · Last seen 2026-05-17 · ok HTTP/1.1 200 18663 ms crawled 2026-05-17

US · 209.147.127.187 · AS30170 Isomedia, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: Great Internet Mersenne Prime Search - PrimeNet
Description: Great Internet Mersenne Prime Search - Finding world record primes since 1996. GIMPS is an organized search for Mersenne prime numbers using provided free software.
Language: en
Canonical: https://www.mersenne.org/

Technology

Server: Microsoft-IIS

Analytics

Google Analytics
Google Tag Manager

Ads

Google Ads (DoubleClick)

Social widgets

YouTube Embed

Third-party hosts loaded (10)

ajax.googleapis.com×2
translate.google.com×2
www.youtube.com×2
stats.g.doubleclick.net×1
translate.googleapis.com×1
www.google-analytics.com×1
www.google.com×1
www.googletagmanager.com×1
www.gstatic.com×1
www.mersenne.ca×1

Contact

Phone

Registration

Registrar

GoDaddy.com, LLC

Created

1996-12-03

Expires

2026-12-02 196 days left

Updated

2024-06-07

Name servers

ns17.domaincontrol.com
ns18.domaincontrol.com

DNS records live

NS

ns17.domaincontrol.com
ns18.domaincontrol.com

MX

10 mx1.forwardemail.net
20 mx2.forwardemail.net

TXT

forward-email=primenet:woltman@alum.mit.edu
NETORGFT10742940.onmicrosoft.com

Email authentication partial

SPF: v=spf1 a mx ip4:209.147.127.187 ip4:162.212.57.131 include:spf.forwardemail.net include:_spf.google.com ~all
softfail (~all)
DMARC: v=DMARC1; p=none
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

GoGetSSL RSA DV CA

from 2026-04-30 to 2026-11-15

Expires in 179 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.mersenne.org/

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