Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
keystonetech.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 05:50:59 UTC · ↺ Refresh
MX Hostnames
- keystonetech-com.mail.protection.outlook.com
MX Priorities
- keystonetech-com.mail.protection.outlook.com: 0
A / AAAA Records
- 52.167.15.22 (no PTR)
Mail Server IPs
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.digitalocean.com hostmaster.keystonetech.com 1771891428 10800 3600 604800 1800
Primary NS (mname)
ns1.digitalocean.com
Admin Email (rname)
hostmaster@keystonetech.com
Serial
1771891428
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns2.digitalocean.com
ns1.digitalocean.com
ns3.digitalocean.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:104.248.225.24 ip4:199.71.186.228 include:_spf.messagegears.net include:24461142.spf06.hubspotemail.net include:24090399.spf10.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- google-site-verification=-jZ0VQD1YmVasMEn5xGnCUb4WbRiny75leYcDCJjed0
- apple-domain-verification=ohjWNWlDPnPVhn9H
- f4k13o5acrnon68b750iffr5m0
- atlassian-domain-verification=Muv2ANIVYijSlnihGQUYqH5CYm0M3LUEg7FnMRphlp5pGW2h9C38GBPAUBA0EzwB
- 3m87bvb7g933pl8whqx3xk41wsdfc74r
- SPFv=spf1 include:spf.protection.outlook.com ip4:104.248.225.24 ip4:199.71.186.228 include:_spf.messagegears.net include:24461142.spf06.hubspotemail.net include:24090399.spf10.hubspotemail.net -all
- MS=ms52753617
- 3rmf7so0lj9sv7v002mllqh1c0
- n026ko425eg42dnr1fasmau30k
- g62bpa2unesbafo3o8m180fm5f
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