Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atlascos.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:59:21 UTC · ↺ Refresh
MX Hostnames
- atlascos-com.mail.protection.outlook.com
MX Priorities
- atlascos-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.73.165 (no PTR)
- 172.67.146.71 (no PTR)
- 2606:4700:3030::ac43:9247
- 2606:4700:3037::6815:49a5
Mail Server IPs
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
amanda.ns.cloudflare.com dns.cloudflare.com 2394851921 10000 2400 604800 1800
Primary NS (mname)
amanda.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2394851921
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
amanda.ns.cloudflare.com
rick.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 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
3 records- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=8WNFVVq-v5ljU5-q2-11r0PqPsf_N-enOurMuyqOq28
- google-site-verification=zgUfn__HC-DtnW_TFttvyS4IWgPfQ8i9_lIUZwjrRLY
Full email verification for atlascos.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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