Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castla.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 06:21:58 UTC · ↺ Refresh
MX Hostnames
- castla-org.mail.protection.outlook.com
MX Priorities
- castla-org.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.10 (no PTR)
- 141.193.213.11 (no PTR)
Mail Server IPs
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.hover.com dnsmaster.hover.com 1771870657 1800 900 604800 300
Primary NS (mname)
ns1.hover.com
Admin Email (rname)
dnsmaster@hover.com
Serial
1771870657
Refresh
1800s
Retry
900s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1.hover.com
ns2.hover.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:76.246.230.241 include:spf.messagelabs.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
8 records- 16so902s16hj7i230utjpcd21u
- MS=E908C8220E4B687FE2AB8A697B273F6FFF9137A2
- SPFv=spf1 include:spf.protection.outlook.com ip4:76.246.230.241 include:spf.messagelabs.com -all
- JBGwclt2dbscFYayXKXZjnggJtDAU8soejxyB0m7xjYutZFP41PE3Vg0+0uaz5sOcP6GGl8QSZBofsCf+xdvHQ==
- MS=ms19054026
- 2vfl2pn021qilbpblu335h00qr
- quickbase-site-verification-675d53718d5d001434a93b1447f86d3da182274f
- pax8validate
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