costco.com

Observed Jul 21, 2026, 19:11 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Not responding

Runs onAkamai Technologies

Email byProofpoint

Secured byDigiCert

Registered withCSC Corporate Domains, Inc.

Also usesGoogle Search ConsoleFacebook/MetaDocuSignAtlassian

1 subdomain · retail

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat costco.com actually stands on - every host below is a signed observation

costco.com

A / AAAA

23.218.130.216

Akamai Technologiesserves the site

a5-64.akam.neta6-64.akam.neta9-66.akam.neta14-67.akam.net+2 more

akam.netanswers its DNS

mx0a-001f9d01.pphosted.commx0b-001f9d01.pphosted.com

Proofpointreceives its email

TLS

costco.com

DigiCert Incissued its certificate

DNS Records

A 1

23.218.130.216

MX 2

10mx0a-001f9d01.pphosted.com
10mx0b-001f9d01.pphosted.com

TXT 31

flexera-domain-verification-mddzccpcqcdbeuih
ciscocidomainverification=778c9d75e8b6fdb7dc3f095b677d08d21ececebe8462cb691c377eb0c061c825
dtm-domain-verification=RvQ3bIbvQAeeMHbrXwHbtfcU-Z8WGxW6tBQQFfdpIvA
onetrust-domain-verification=0cc4aa566b3f4d3d9f5f03bc7cfd73c4
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
ms-domain-verification=2d5e7430-b403-4b17-a1df-4cb3eee9967b
google-site-verification=_UMsl36liAGjRl5ldvmM5bK7YCzP_z19C522LsS_6Z4
vmware-cloud-verification-7161df13-1d90-4cbe-a1a9-0f29fc3e9ffc
google-site-verification=dffTnhrKhs3V5-UUHvEYJg-RNLJjBz27jCBqmF6sX_E
google-site-verification=XGHXzaAnl-HmYsIW4QB-l4aaHMgJyBHqcT3Jc8SB2BY

NS 6

a5-64.akam.net
a6-64.akam.net
a9-66.akam.net
a14-67.akam.net
a28-66.akam.net
a1-116.akam.net

SOA 1

a5-64.akam.net hostmaster.akamai.com

SRV 2

vc.costco.com:5060 p0
vc.costco.com:5061 p10

CAA 2

issue "certainly.com"
issue "digicert.com"

TLS Certificates (2)

Common Name	Issuer	Expires
`costco.com`	C=US, O=DigiCert Inc, CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1	Sun, 06 Sep 2026 23:59:59 +0000
`DigiCert Global G3 TLS ECC SHA384 2020 CA1`	C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G3	Sun, 13 Apr 2031 23:59:59 +0000

Subdomains (1)

www.costco.com

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for costco.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/costco.com">
  <img src="https://domaindrift.io/badge/costco.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for costco.com">
</a>

Ed25519 Receipt

Receipt ID: rcpt_a7633fb0620e1f00
Output Hash: f0da54f18e6b4d6b6a2c785558bb8ce3df95c730ddd332e5ad8f0abe756122c6
Signature: ed25519:155cfc4d4a92c2e1de9118deb3d811a05a30a4e8dd1322ad9e2144eba469ade4221aabcf5d9807c5a647799a831c558d76e654521cdf0c4a50342e237ed2130b
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/costco.com