3h.com.hk

Valid Email Server
Domain Lookup › 3h.com.hk

Domain Overview

DNS: ✓ 22h ago Checker: ✓ 22h ago
3h.com.hk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 12:03:18 UTC · ↺ Refresh

MX Hostnames

  • mailsec.protonmail.ch
  • mail.protonmail.ch

MX Priorities

  • mail.protonmail.ch: 10
  • mailsec.protonmail.ch: 20

A / AAAA Records

  • 13.248.243.5 ↩ a16e665f42988324c.awsglobalaccelerator.com

Mail Server IPs

  • 176.119.200.128 ↩ mail.protonmail.ch
  • 185.70.42.128 ↩ mail.protonmail.ch
  • 185.205.70.128 ↩ mail.protonmail.ch
  • 185.70.42.129 ↩ mailsec.protonmail.ch
  • 185.205.70.129 ↩ mailsec.protonmail.ch
  • 176.119.200.129 ↩ mailsec.protonmail.ch

SOA Record

Raw SOA ns4.dataplugs.com root.ns4.dataplugs.com 2024031802 3600 1800 1209600 86400
Primary NS (mname)
ns4.dataplugs.com
Admin Email (rname)
root@ns4.dataplugs.com
Serial
2024031802
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns5.dataplugs.com
ns4.dataplugs.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.protonmail.ch ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 include:_spf.protonmail.ch ~all
  • protonmail-verification=b1784d054df24a0c5ab02838f24c73cce28942f4
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