Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
centuryslate.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 13:32:59 UTC · ↺ Refresh
MX Hostnames
- centuryslate-com.mail.protection.outlook.com
MX Priorities
- centuryslate-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.211.77 (no PTR)
- 104.21.23.134 (no PTR)
- 2606:4700:3035::6815:1786
- 2606:4700:3031::ac43:d34d
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
SOA Record
Raw SOA
coby.ns.cloudflare.com dns.cloudflare.com 2399303626 10000 2400 604800 1800
Primary NS (mname)
coby.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399303626
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
coby.ns.cloudflare.com
zelda.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
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
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 -all
- MS=ms20117126 +ip4:45.4.174.170
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