costco.com
Welcome to Costco Wholesale
costco.com is registered with CSC Corporate Domains, Inc. since March 17, 1997 (29.6 years). The registration expires on March 18, 2027. The site runs on Next.js, React, Criteo and 9 other technologies. Its email security grade is B. Its SSL certificate is issued by Certainly and is valid for 21 more days.
- Domain age
- 29.6 yrs
- Technologies
- 12
- Email security
- B
- SSL days left
- 21
Registration
| Registrar | CSC Corporate Domains, Inc. |
|---|---|
| IANA ID | 299 |
| Registered | March 17, 1997 |
| Expires | March 18, 2027 |
| Updated | March 15, 2026 |
| Status | client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited |
| Name servers | a1-116.akam.net, a14-67.akam.net, a28-66.akam.net, a5-64.akam.net, a6-64.akam.net, a9-66.akam.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 151.101.67.52 | 42569 |
| A | 151.101.131.52 | 42569 |
| A | 151.101.195.52 | 42569 |
| A | 151.101.3.52 | 42569 |
| MX | mxa-001f9d01.gslb.pphosted.com 5 | 1506 |
| MX | mx0b-001f9d01.pphosted.com 10 | 1506 |
| MX | mxb-001f9d01.gslb.pphosted.com 5 | 1506 |
| MX | mx0a-001f9d01.pphosted.com 10 | 1506 |
| NS | a9-66.akam.net | 43200 |
| NS | a14-67.akam.net | 43200 |
| NS | a28-66.akam.net | 43200 |
| NS | a6-64.akam.net | 43200 |
| NS | a5-64.akam.net | 43200 |
| NS | a1-116.akam.net | 43200 |
| CAA | issue 128 digicert.com | 43200 |
| CAA | issue 128 certainly.com | 43200 |
| TXT | google-site-verification=_UMsl36liAGjRl5ldvmM5bK7YCzP_z19C522LsS_6Z4 | 300 |
| TXT | vmware-cloud-verification-7161df13-1d90-4cbe-a1a9-0f29fc3e9ffc | 300 |
| TXT | google-site-verification=3Kx9tc2_v5CgX3NuVqNwWFZRYanPPJCP3__8KbRxn5Q | 300 |
| TXT | intersight=c7f5c84fa7c1559a23ae37f0a45aa2806cc1b09291dfe94ffa5c775b65feb280 | 300 |
| TXT | onetrust-domain-verification=0cc4aa566b3f4d3d9f5f03bc7cfd73c4 | 300 |
| TXT | docusign=3e51deb4-b2f9-46ef-b120-18f6955ebce1 | 300 |
| TXT | a3a34ae6-fccb-4452-9105-cb31f5348086 | 300 |
| TXT | google-site-verification=XGHXzaAnl-HmYsIW4QB-l4aaHMgJyBHqcT3Jc8SB2BY | 300 |
| TXT | ciscocidomainverification=778c9d75e8b6fdb7dc3f095b677d08d21ececebe8462cb691c377eb0c061c825 | 300 |
| TXT | MS=ms45356090 | 300 |
| TXT | have-i-been-pwned-verification=7411effeb11c12300a4c027396b4cf0f | 300 |
| TXT | onx=58b94d97-109f-4db2-98cf-5a1c93395b4d | 300 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, Certainly Intermediate R1, Certainly |
| Expires | December 2, 2026 |
| Days remaining | 21 |
| Protocol | TLSv1.3 |
| Names | costco.com, costco.pharmacy, costcobusinessprinting.com, costcogas.com, costcogas.net, costcogasstation.com, costcogasstation.net, costcopharmacy.com, costcowaterdelivery.com, costcowholesale.com, cpsia.costco.com, ks8userportal.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.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- 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: google, s1, s2, mandrill).
- good4 MX record(s) found. Mail is handled by Proofpoint.
Homepage metadata
| Title | Welcome to Costco Wholesale |
|---|---|
| Description | Shop Costco.com for electronics, computers, furniture, outdoor living, appliances, jewelry and more. Enjoy low warehouse prices on name-brands products delivered to your door |
| Language | en-us |
| Canonical | https://www.costco.com |
| Indexable | Yes |
| Word count | 632 |
About costco.com
Who is the registrar of costco.com?
costco.com is registered with CSC Corporate Domains, Inc. (IANA ID 299).
When does costco.com expire?
The current registration of costco.com expires on March 18, 2027. It was first registered on March 17, 1997.
What technology does costco.com use?
We detected 12 technologies on costco.com, including Criteo, OneTrust, Next.js, React, Akamai mPulse, Node.js.
Does costco.com protect its email with SPF and DMARC?
costco.com scores 85/100 (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 costco.com?
costco.com uses a9-66.akam.net, a14-67.akam.net, a28-66.akam.net, a6-64.akam.net, a5-64.akam.net, a1-116.akam.net.