Is Costargroup.com Legit or Not?

No reviews yet | costargroup.com

Domain age27.6 years CompanyCoStar Group, Inc.

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Trust score

85/100

Likely Legit

Our checks and user reviews suggest this website is legitimate. Still use normal caution when paying online.

Last checked October 16, 2026

Summary

Costargroup.com (operated by CoStar Group, Inc.) has a trust score of 85 out of 100. The domain was registered on March 22, 1999, about 27.6 years ago, and the site uses a valid HTTPS certificate. No customer reviews have been posted yet.

What we found

+10 Valid HTTPS certificate
0 Site blocked our automated visit (HTTP 403), common for large sites
+25 Domain registered 28+ years ago

Every website starts at 50 points. How the score works

Company and contact

Company: CoStar Group, Inc.
Source: Security certificate (organisation validated)
Email: Not found
Phone: Not found
Policies linked: None found
Social profiles: None found

Domain and security

Registered: Mar 22, 1999
Domain age: 27.6 years
Expires: Mar 22, 2027 (in 136 days)
Registrar: MarkMonitor Inc.
Registry status: Transfer lock on (protects against hijacking)
HTTPS: Valid certificate
Certificate issuer: DigiCert Inc until Feb 25, 2027
DNS / hosting: Akamai
IP address: 23.210.138.169
Email on domain: Set up
Google Safe Browsing: Not checked

Connected websites

Redirects, shared servers, the same operator and links can reveal a network of related sites.

We found no redirects, shared dedicated servers or related websites for costargroup.com.

Costargroup.com reviews

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Is Costargroup.com legit, safe or a scam?

Is Costargroup.com legit?

Based on our checks, Costargroup.com scores 85 out of 100, which we rate as "Likely Legit". The domain has been registered for 27.6 years. There are no customer reviews yet, so we cannot confirm what buying from them is like.

Is Costargroup.com safe to buy from?

Costargroup.com uses a valid HTTPS certificate, so payment details are encrypted on the way to the site. Whatever the score, pay with a card or PayPal so you can dispute the charge if something goes wrong.

Is Costargroup.com real or fake?

Costargroup.com looks like a real, established website: its domain is 27.6 years old and it is operated by CoStar Group, Inc..

Is Costargroup.com a scam?

We found no strong signs that Costargroup.com is a scam, but no automated check is perfect. Read the reviews for real experiences.

Is Costargroup.com trustworthy?

There are not enough customer reviews yet to judge. Our automated checks give it 85 out of 100.

Who owns costargroup.com?

According to security certificate (organisation validated), the website is operated by CoStar Group, Inc.. The domain is registered through MarkMonitor Inc..

How can I contact Costargroup.com customer service?

We did not find contact details on the homepage of costargroup.com. Be careful with support numbers found elsewhere online, which are sometimes run by scammers.

How do I log in to Costargroup.com safely?

Type https://costargroup.com yourself or use a bookmark, rather than following links in emails or text messages. Scammers copy login pages on lookalike addresses to steal passwords.