3mc.app

.app crawl

First seen 2026-04-14 · Last seen 2026-05-05 · ok HTTP/1.1 200 749 ms crawled 2026-05-07

US · 172.105.148.186 · AS63949 Akamai Connected Cloud

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Three Month Calendar (3MC)
Description: 3MC is a fast, clean, configurable Mac calendar viewer app. It pulls down from your menu bar with a click or keystroke, presenting a continuous, freely-scrollable view of weeks, with configurable markers for your calendar events, switchable calendar views, and plenty of options.
Language: en

Open Graph

url: https://3mc.app/
title: Three Month Calendar for Mac
description: 3MC is a fast, clean, configurable Mac calendar viewer app. It pulls down from your menu bar with a click or keystroke, presenting a continuous, freely-scrollable view of weeks, with configurable markers for your calendar events, switchable calendar views, and plenty of options.

Technology

Server: Caddy

Social

DNS records live

NS

ns1.linode.com
ns2.linode.com
ns3.linode.com
ns4.linode.com
ns5.linode.com

TXT

google-site-verification=hzOnXuB7fcyvxtICcWgtJThdxn4Ys8psjH7FBPvb1II

Email authentication no MX

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

Certificate (current)

E7

from 2026-03-23 to 2026-06-21

Expires in 33 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://3mc.app/

findings

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

Links to (4)

Linked from (1)

casualprogrammer.com×2