# Mensa International (mensa.org)

Is mensa.org legit and trustworthy? Truth score 80 out of 100, high truth signals: 8 of 10 public checks clear, 2 for information. Legitimacy confidence: high. Customer satisfaction: not enough reviews to say.

- Truth score: 80 out of 100
- Legitimacy confidence: high
- Claimed: no
- Assessed: 2026-10-30

## Business details

- Category: Trade body or membership association
- Years in business: 61 years
- Founded: 1946
- Sells: Subscription or membership
- Sells to: The public
- Kind of seller: Charity or non-profit
- Licensed trade: No licence normally needed
- Domain age: 31 years
- Address: The Old Post Office Main Road, Stickney, Boston, PE22 8AY, England
- Email address: enquiries@mensa.org
- Phone number: +44 1400 272675
- Contact page: https://mensa.org/contact-us/
- Website: https://mensa.org/
- Social media: Facebook https://facebook.com/mensainternational/, Instagram https://www.instagram.com/mensainternational.official/?hl=en, X https://twitter.com/MensaInternatl, LinkedIn https://www.linkedin.com/company/mensainternational, TikTok https://www.tiktok.com/@mensa.international, YouTube https://www.youtube.com/@mensainternationalofficial
- Registered to do: 94990 Activities of other membership organisations n.e.c.
- Previous names: INTERMENSA LIMITED (7 May 1965 to 6 Feb 1985)
- Latest YouTube video: MENSA IS 80 official video https://www.youtube.com/watch?v=JTS5Sdtw7_8

## Summary

mensa.org is run by Mensa International Limited, an active UK company registered at Companies House 61 years ago, and was founded in 1946. Its website address was registered 31 years ago, and is locked against transfer to someone else. The postcode on its website matches its registered office. No malware or phishing warnings found for its website. We could not find a customer rating.

Important context: Truth Signal weighs public evidence about this business. A high score means strong evidence that the business is established and legitimate, not a promise that it is safe to buy from or that every purchase will go well. A low score means the evidence is thin or raises concerns, not that the business is unsafe or a scam.

## Positives

- An active UK company registered at Companies House, set up 61 years ago (source: companies_house)
- Its website address was registered 31 years ago (source: rdap)
- The postcode on its website matches its registered office at Companies House (source: facts)
- No malware or phishing warnings found for its website (source: safe_browsing)

## Not found

- Reviews information was not found from our checks. (source: reviews)

## How to check if mensa.org is legit

To check if mensa.org is legit yourself, look at the same public records we did: the company register, who owns the web address and since when, customer reviews, visitor numbers, how long the site has existed, social profiles, malware lists, data breaches and email security. Each row below shows what that record says about mensa.org; open a row to see the facts and the source to check them yourself. Step by step: [how to know if a shopping site is legit](/guides/how-to-know-if-a-shopping-site-is-legit).

- Who they are: Company details: Companies House names no person with significant control (the people who own or control the company) (Clear)
- Who they are: Domain registration: Its website address was registered 31 years ago (Clear)
- Who they are: Website details: We read 4 of its pages: contact, about, terms and privacy (Clear). Pages found: contact (https://mensa.org/contact-us/), about (https://mensa.org/about-us/), terms (https://mensa.org/terms-conditions/), privacy (https://mensa.org/privacy-policy/)
- Reputation and track record: Customer reviews: We found no page for it on any review website, such as Trustpilot (For information)
- Reputation and track record: Visitor traffic: Its visitor numbers jumped suddenly into the top 50,000 websites by March 2026: a burst of traffic rather than a steady history (For information)
- Reputation and track record: Web history and authority: Found: wikipedia page (Clear)
- Reputation and track record: Social presence: It is on 6 social media platforms (Facebook, Instagram, LinkedIn, TikTok, X and YouTube); the largest audience is 39,739 followers on Facebook (Clear)
- Safety: Malware and phishing: No malware or phishing warnings found for its website (Clear). This check is not perfect: it can miss a harmful site, and it can wrongly warn about a safe one.
- Safety: Data breach history: No known data breach involving the company (Clear)
- Safety: Domain and email security: Its email is only partly protected: mail forged in its name is reported but not blocked (Clear)

## What its pages say

Quoted word for word from mensa.org's own pages.

- Ways to contact them: “• If you have ANY OTHER QUERY , you can either contact us via the form below or send us an e-mail and we’ll respond as soon as we can.” (https://www.mensa.org/contact-us/)
- In their own words: “The High IQ Society with around 170,000 members of all ages in 90+ countries worldwide. “Mensa” means “table” in Latin, and the organisation was so named because Mensa is a round-table society where ethnicity, colour, creed, national origin, age, politics, educational and social background are all completely irrelevant. In fact, the only relevant qualification for membership is scoring within the upper 2% of the general population on an approved intelligence test.” (https://www.mensa.org/about-us/)
- Who you're buying from: “Company registration number: 00848100” (https://www.mensa.org/terms-conditions/)

## Cite

Truth Signal, Mensa International: truth score 80 out of 100, legitimacy confidence High, assessed 2026-10-30, https://truthsignal.com/business/mensa.org. Licence CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). The same report as JSON: send Accept: application/json to https://truthsignal.com/business/mensa.org