Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
5one.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 13:32:59 UTC · ↺ Refresh
MX Hostnames
- mxa-00078002.gslb.pphosted.com
- mxb-00078002.gslb.pphosted.com
MX Priorities
- mxa-00078002.gslb.pphosted.com: 10
- mxb-00078002.gslb.pphosted.com: 10
A / AAAA Records
- 104.239.236.220 (no PTR)
Mail Server IPs
- 148.163.153.24 ↩ mx0b-00078002.pphosted.com
- 148.163.149.25 ↩ mx0a-00078002.pphosted.com
SOA Record
Raw SOA
dns1.mastercard.com hostmaster.mastercard.com 2015030463 14400 3600 2419200 300
Primary NS (mname)
dns1.mastercard.com
Admin Email (rname)
hostmaster@mastercard.com
Serial
2015030463
Refresh
14400s
Retry
3600s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
a9-64.akam.net
dns1.mastercard.com
a22-65.akam.net
a7-67.akam.net
a18-64.akam.net
dns2.mastercard.com
a26-66.akam.net
a1-29.akam.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:83.244.201.179 ip4:57.67.171.53 include:deliverygateways.mastercard.com include:external.mastercard.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;fo=1;rua=mailto:[email protected];ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 ip4:83.244.201.179 ip4:57.67.171.53 include:deliverygateways.mastercard.com include:external.mastercard.com -all
- MS=ms72350311
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