Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
corebts.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 23:09:48 UTC · ↺ Refresh
MX Hostnames
- corebts-com.mail.protection.outlook.com
MX Priorities
- corebts-com.mail.protection.outlook.com: 10
A / AAAA Records
- 141.193.213.10 (no PTR)
Mail Server IPs
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
gwen.ns.cloudflare.com dns.cloudflare.com 2399593515 10000 2400 604800 1800
Primary NS (mname)
gwen.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399593515
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ivan.ns.cloudflare.com
gwen.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:a118apgn9k.powerspf.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=0:1:d:s;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
7 records- SPFv=spf1 include:a118apgn9k.powerspf.com ~all
- ZOOM_verify_ebmkICsadlRTP4LYk7NsJA
- asv=ad9bc87b5f17a9ead31d0f6144930787
- browserstack-domain-verification=a72631a7-142b-4452-b486-56aa326e4426
- canva-site-verification=brZDO_sQGxCRYvYzzuy1SQ
- smartsheet-site-validation=l_rpQpQntAjic4UTm7m0uKTSuTzUp_oV
- teamviewer-sso-verification=b28b223d52a04fe0853ffc562049ed95
Full email verification for corebts.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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