Domain Overview
DNS: ✓ 3d ago
Checker: ✓ 3d ago
caliber-cos.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-18 10:11:16 UTC · ↺ Refresh
MX Hostnames
- calibercos-com01i.mail.protection.outlook.com
MX Priorities
- calibercos-com01i.mail.protection.outlook.com: 0
A / AAAA Records
- 198.49.23.145 (no PTR)
- 198.185.159.144 (no PTR)
- 198.185.159.145
- 198.49.23.144
Mail Server IPs
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.p08.nsone.net hostmaster.nsone.net 1606514094 43200 7200 1209600 3600
Primary NS (mname)
dns1.p08.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1606514094
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns02.squarespacedns.com
ns03.squarespacedns.com
ns04.squarespacedns.com
dns1.p08.nsone.net
dns2.p08.nsone.net
dns3.p08.nsone.net
dns4.p08.nsone.net
ns01.squarespacedns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:49071970.spf04.hubspotemail.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
2 records- SPFv=spf1 include:spf.protection.outlook.com include:49071970.spf04.hubspotemail.net -all
- v=verifydomain MS=6887387
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