costar.com
CoStar | # 1 Commercial Real Estate Information Company
costar.com is registered with MarkMonitor Inc. since November 10, 1994 (32.0 years). The registration expires on November 9, 2034. The site runs on Next.js, React, Akamai and 7 other technologies. Its email security grade is B. Its SSL certificate is issued by DigiCert Inc and is valid for 107 more days.
- Domain age
- 32.0 yrs
- Technologies
- 10
- Email security
- B
- SSL days left
- 107
Registration
| Registrar | MarkMonitor Inc. |
|---|---|
| IANA ID | 292 |
| Registered | November 10, 1994 |
| Expires | November 9, 2034 |
| Updated | July 10, 2025 |
| Status | client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited |
| Name servers | a1-73.akam.net, a22-64.akam.net, a3-65.akam.net, a4-66.akam.net, a6-67.akam.net, a9-64.akam.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 184.31.80.32 | 20 |
| MX | costar-com.mail.protection.outlook.com 10 | 300 |
| NS | a4-66.akam.net | 600 |
| NS | a22-64.akam.net | 600 |
| NS | a9-64.akam.net | 600 |
| NS | a6-67.akam.net | 600 |
| NS | a1-73.akam.net | 600 |
| NS | a3-65.akam.net | 600 |
| CAA | issue 0 digicert.com | 3600 |
| CAA | issue 0 godaddy.com | 3600 |
| CAA | issue 0 amazon.com | 3600 |
| CAA | issue 0 letsencrypt.org | 3600 |
| TXT | logmein-verification-code=6343f47d-66e6-420d-9d7e-00b416ceb76f | 300 |
| TXT | kiro-site-verification=528df5b9-065d-4b7b-931a-906cc269aa37 | 300 |
| TXT | Ha0IA3PsZyDHzosXQ7tyJugLvW1hIJ0nbhFLwA-mgnk | 300 |
| TXT | anthropic-domain-verification-81c0ss=v2WPeZ9SSaxuDYpbugsxNJJ50 | 300 |
| TXT | figma-domain-verification=8232118525ac89d71aa3f807657ba9e5e26cfa8f711f2e3144c4c5c7fc2aec1e-1734372308 | 300 |
| TXT | facebook-domain-verification=gx1cs3gbyrsju4n0u8rnja67ki8kf9 | 300 |
| TXT | pardot936613=1f9f0b029f18f80c6d6562ff5bedfde2a2700edfd856ca3aaf27143551c2cf16 | 300 |
| TXT | zoho-verification=zb12043825.zmverify.zoho.com | 300 |
| TXT | google-site-verification=V2Uq41cnb_brDH_t0cJHXaTiJsOLj6LlODcSKYoWqpk | 300 |
| TXT | _2j4f57rzo6nut1kznqclkbmwmiyhqw2 | 300 |
| TXT | atlassian-sending-domain-verification=09f967f5-912a-44ba-a84c-c386e6b534c0 | 300 |
| TXT | adobe-sign-verification=1d48bbfc701435de69aaa739f3760b3a | 300 |
Technology stack
Analytics and advertising IDs
google_tag_manager:GTM-W3JHQWWSSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, DigiCert EV RSA CA G2, DigiCert Inc |
| Expires | February 26, 2027 |
| Days remaining | 107 |
| Protocol | TLSv1.3 |
| Names | gateway.costar.com, ads.csgpmarketplace.com, ahprd1cdn.csgpimgs.com, ahprd2cdn.csgpimgs.com, ahprd3cdn.csgpimgs.com, ahprd4cdn.csgpimgs.com, ahprdcdn1.costar.com, ahprdcdn1.csgpimgs.com, ahprdcdn2.costar.com, ahprdcdn2.csgpimgs.com, ahprdcdn3.costar.com, ahprdcdn3.csgpimgs.com |
Email security
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: selector1, s1, s2, mandrill).
- good1 MX record(s) found. Mail is handled by Microsoft 365.
- goodBIMI record found: supporting inboxes can show your brand logo.
Homepage metadata
| Title | CoStar | # 1 Commercial Real Estate Information Company |
|---|---|
| Description | CoStar, the world leader in commercial real estate information, has the most comprehensive database of real estate data throughout the US, Canada, UK and France. |
| Language | en |
| Canonical | https://www.costar.com/news/gb |
| Indexable | Yes |
| Word count | 1637 |
About costar.com
Who is the registrar of costar.com?
costar.com is registered with MarkMonitor Inc. (IANA ID 292).
When does costar.com expire?
The current registration of costar.com expires on November 9, 2034. It was first registered on November 10, 1994.
What technology does costar.com use?
We detected 10 technologies on costar.com, including Akamai, unpkg, Osano, Next.js, React, Akamai mPulse.
Does costar.com protect its email with SPF and DMARC?
costar.com scores 87/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.
What are the name servers of costar.com?
costar.com uses a4-66.akam.net, a22-64.akam.net, a9-64.akam.net, a6-67.akam.net, a1-73.akam.net, a3-65.akam.net.