Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
frostco-cpa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 19:34:06 UTC · ↺ Refresh
MX Hostnames
- frostcocpa-com01i.mail.protection.outlook.com
MX Priorities
- frostcocpa-com01i.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.18.140 (no PTR)
- 172.67.182.79 (no PTR)
- 2606:4700:3035::6815:128c
- 2606:4700:3031::ac43:b64f
Mail Server IPs
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
SOA Record
Raw SOA
alberto.ns.cloudflare.com dns.cloudflare.com 2399345348 10000 2400 604800 1800
Primary NS (mname)
alberto.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399345348
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
harmony.ns.cloudflare.com
alberto.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 exists:%{i}._i.%{d}._d.espf.agari-dns.net include:%{d}.f7.spf-protect.agari-dns.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- have-i-been-pwned-verification=dweb_18yjosd2y9fytffx4n8ci5f9
- SPFv=spf1 exists:%{i}._i.%{d}._d.espf.agari-dns.net include:%{d}.f7.spf-protect.agari-dns.net -all
- MS=ms24545045
- MS=ms62618319
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