Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
costco.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 03:17:31 UTC · ↺ Refresh
MX Hostnames
- mx0b-001f9d01.pphosted.com
- mx0a-001f9d01.pphosted.com
MX Priorities
- mx0b-001f9d01.pphosted.com: 10
- mx0a-001f9d01.pphosted.com: 10
A / AAAA Records
- 23.56.210.23 ↩ a23-56-210-23.deploy.static.akamaitechnologies.com
Mail Server IPs
- 148.163.158.49 ↩ mx0b-001f9d01.pphosted.com
- 148.163.156.53 ↩ mx0a-001f9d01.pphosted.com
SOA Record
Raw SOA
a14-67.akam.net hostmaster.akamai.com 3614 10800 3600 2332800 900
Primary NS (mname)
a14-67.akam.net
Admin Email (rname)
hostmaster@akamai.com
Serial
3614
Refresh
10800s
Retry
3600s
Expire
2332800s
Minimum TTL
900s
Nameservers (NS)
a5-64.akam.net
a1-116.akam.net
a9-66.akam.net
a28-66.akam.net
a14-67.akam.net
a6-64.akam.net
SPF Record
✓ Strict (-all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
30 records- flexera-domain-verification-mddzccpcqcdbeuih
- onetrust-domain-verification=0cc4aa566b3f4d3d9f5f03bc7cfd73c4
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- adobe-idp-site-verification=ae9e3f0f-2848-4000-aed4-e1c7e8031815
- VmwCafXLaizwh4cfQPdy
- ms-domain-verification=2d5e7430-b403-4b17-a1df-4cb3eee9967b
- vmware-cloud-verification-7161df13-1d90-4cbe-a1a9-0f29fc3e9ffc
- google-site-verification=XGHXzaAnl-HmYsIW4QB-l4aaHMgJyBHqcT3Jc8SB2BY
- postman-domain-verification=a5e9b1c7145c22a192ff089eb9c140d4a589b99d7763b87483c24c2deba6d7032578d3a1329849d9e52dd2ae59b3721b451d3fdb461b4514f4e8f5f6b8d696cd
- google-site-verification=_UMsl36liAGjRl5ldvmM5bK7YCzP_z19C522LsS_6Z4
- have-i-been-pwned-verification=7411effeb11c12300a4c027396b4cf0f
- dtm-domain-verification=RvQ3bIbvQAeeMHbrXwHbtfcU-Z8WGxW6tBQQFfdpIvA
- d4c2e4a3297fe25a71d030b67eb83bfc
- Dynatrace-site-verification=85537782-cedf-4d0d-9b24-3126f2ae1dcb__87kk52lv2c0qrp2k60td8iugme
- facebook-domain-verification=46if6nzbzbffbhikh3uq8sye7ez5bg
- onx=58b94d97-109f-4db2-98cf-5a1c93395b4d
- docusign=4db9a87a-9dea-417f-bfaa-d45bf7c94291
- intersight=c7f5c84fa7c1559a23ae37f0a45aa2806cc1b09291dfe94ffa5c775b65feb280
- flexera-domain-verification-bazgmhadwejbbgdq
- docusign=3e51deb4-b2f9-46ef-b120-18f6955ebce1
- google-site-verification=dffTnhrKhs3V5-UUHvEYJg-RNLJjBz27jCBqmF6sX_E
- google-site-verification=3Kx9tc2_v5CgX3NuVqNwWFZRYanPPJCP3__8KbRxn5Q
- a3a34ae6-fccb-4452-9105-cb31f5348086
- onx=efbf8ab1-7e83-4416-85a4-711586edb47c
- ciscocidomainverification=778c9d75e8b6fdb7dc3f095b677d08d21ececebe8462cb691c377eb0c061c825
- onetrust-domain-verification=e62749d1cc3549bea14bacad4cd8215f
- d3958bd3-ebec-43fc-8b73-53355efdf2f6.costco.com
- atlassian-domain-verification=mOyfCnOmDOAo2wCWxZ1feSqlR3yeXX6nP2KotAWqkWWtO1NAJydXpiYNCYEhJUn8
- MS=ms45356090
- onx=2d96b540-bcd6-4410-813c-d5e96ab635c5
Full email verification for costco.com
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