high5.com.hk

Valid Email Server
Domain Lookup › high5.com.hk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
high5.com.hk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 15:59:20 UTC · ↺ Refresh

MX Hostnames

  • high5-com-hk.mail.protection.outlook.com

MX Priorities

  • high5-com-hk.mail.protection.outlook.com: 0

A / AAAA Records

  • 103.13.50.131 ↩ ns31.hostingspeed.net

Mail Server IPs

  • 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
  • 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
  • 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.hostingspeed.net admin.hostingspeed.net 2026012601 3600 1800 1209600 86400
Primary NS (mname)
dns1.hostingspeed.net
Admin Email (rname)
admin@hostingspeed.net
Serial
2026012601
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

dns1.hostingspeed.net
dns2.hostingspeed.net
dns4.hostingspeed.net
dns3.hostingspeed.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No 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=ms21394705
Full email verification for high5.com.hk

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits