Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
costco.co.uk
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 07:20:34 UTC · ↺ Refresh
MX Hostnames
- mx0a-001f9d01.pphosted.com
- mx0b-001f9d01.pphosted.com
MX Priorities
- mx0a-001f9d01.pphosted.com: 1
- mx0b-001f9d01.pphosted.com: 1
A / AAAA Records
- 35.192.62.159 ↩ 159.62.192.35.bc.googleusercontent.com
Mail Server IPs
- 148.163.156.53 ↩ mx0a-001f9d01.pphosted.com
- 148.163.158.49 ↩ mx0b-001f9d01.pphosted.com
SOA Record
Raw SOA
dbru.br.ns.els-gms.att.net please_set_email.absolutely.nowhere 94 10800 3600 2332800 900
Primary NS (mname)
dbru.br.ns.els-gms.att.net
Admin Email (rname)
please_set_email@absolutely.nowhere
Serial
94
Refresh
10800s
Retry
3600s
Expire
2332800s
Minimum TTL
900s
Nameservers (NS)
a14-67.akam.net
dmtu.mt.ns.els-gms.att.net
dbru.br.ns.els-gms.att.net
a28-66.akam.net
a6-64.akam.net
a5-64.akam.net
a1-116.akam.net
a9-66.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
13 records- onetrust-domain-verification=089115edcd424782a5329a204fe20999
- MS=CF1560007A36644969A5F84FA1FC3ADF2EE64741
- Dynatrace-site-verification=b3787de5-0e18-4fca-bffb-0cd10268ac89__814qmu8achf44j089n92jnd5hg
- cisco-ci-domain-verification=3ed8c54316bfae60c88456bb27cb7d07a17ea7b913d8d83eab8eeb7c2169cc4b
- atlassian-domain-verification=mOyfCnOmDOAo2wCWxZ1feSqlR3yeXX6nP2KotAWqkWWtO1NAJydXpiYNCYEhJUn8
- google-site-verification=L8OFVTKm2OecVPw9qB3K9neIrY9NexEZCi8Xq4cuHFs
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- 6wxl9d0fcbr9mhvq3lft489nrx8y82tc
- docusign=01dd74e7-6c74-4b8f-9810-d8706f48be16
- docusign=9ed56485-ef2c-4497-a46a-7353bc4f0dab
- onetrust-domain-verification=45d445ef0d144d289d61c204bdbe5a5e
- apple-domain-verification=YLLOyI5OMrF6uIbw
- spycloud-domain-verification=795891b5-9cab-4011-8635-90e5e7991346
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