Domain · Tranco #17,499

costar.com

costar.com is ranked #17,499 among the world's most-visited sites (Tranco). It resolves to 23.207.137.215, hosted on a23-207-137-215.deploy.static.akamaitechnologies.com, and presents a TLS certificate issued by DigiCert Inc.

HTTP 403

Tranco rank	#17,499
IPv4	23.207.137.215
Hosting / reverse DNS	a23-207-137-215.deploy.static.akamaitechnologies.com
Hosting network	AS16625 · AKAMAI-AS - Akamai Technologies, Inc., US
Nameservers	a1-73.akam.net, a22-64.akam.net, a3-65.akam.net, a4-66.akam.net
Mail servers (MX)	costar-com.mail.protection.outlook.com (10)
HTTP status	403
Web server	AkamaiGHost
Page title	Access Denied
Detected tech	AkamaiGHost
TLS certificate	DigiCert Inc · expires 2026-11-06

Linked company

This domain's name matches a legal entity in our directory:

COSTAR LLC

Notable DNS TXT records

canva-site-verification=Kmo16jkO2-WjqzDGoE0acQ
onetrust-domain-verification=97a96971e65f467089b15999423fae35
atlassian-domain-verification=LAkz2FUxxMo9oBp9qlpKyMPkFQT3p7fXn2F/dz0S07Gt8LASUog19dNicOe7njFJ
h1-domain-verification=cD9zKcj24tbZFgRbtZ5ieZTzQ5TZLr2XsH6V25jK54ZzC8YR
google-site-verification=a2XukE9v_rJumYMecgCt6PqTMDMJFf5plZThPacWxT4
wiz-domain-verification=5fd193874a07240b784f0a3fe229ae86677cbeb7873b06003060f611fcfb59bb

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FAQ

What is the IP address of costar.com?

costar.com resolves to 23.207.137.215 (a23-207-137-215.deploy.static.akamaitechnologies.com).

Who issued the SSL certificate for costar.com?

The TLS/SSL certificate for costar.com was issued by DigiCert Inc, valid until 2026-11-06.

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DNS/HTTP/TLS observed 2026-08-06; registration data via RDAP. Informational only. Download JSON · CSV · Browse domains