Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
houstonsafeandlock.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 21:51:27 UTC · ↺ Refresh
MX Hostnames
- houstonsafeandlock-com.mail.protection.outlook.com
MX Priorities
- houstonsafeandlock-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.233.221.92 ↩ 172-233-221-92.ip.linodeusercontent.com
Mail Server IPs
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
jade.ns.cloudflare.com dns.cloudflare.com 2398926137 10000 2400 604800 1800
Primary NS (mname)
jade.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398926137
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jade.ns.cloudflare.com
jihoon.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.elasticemail.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
3 records- MS=ms68322111
- apple-domain-verification=yP3wAs8sEtUeGx7D
- SPFv=spf1 include:_spf.elasticemail.com include:spf.protection.outlook.com -all
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