Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hostduplex.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 07:54:12 UTC · ↺ Refresh
MX Hostnames
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt1.aspmx.l.google.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
A / AAAA Records
- 104.25.233.4
- 104.25.232.4
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 142.251.111.27 ↩ bk-in-f27.1e100.net
- 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
SOA Record
Raw SOA
dns1.hostduplex.com dns.cloudflare.com 2399235692 10000 2400 604800 1800
Primary NS (mname)
dns1.hostduplex.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399235692
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dns2.hostduplex.com
dns3.hostduplex.com
dns1.hostduplex.com
SPF Record
✓ Strict (-all)
v=spf1 a mx include:amazonses.com include:_spf.google.com include:_hdmail.hostduplex.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
google._domainkey
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- ahrefs-site-verification_5efec2590f0450acaf87ee7272d2a8637e34708f3adedf96770631d095acd17d
- SPFv=spf1 a mx include:amazonses.com include:_spf.google.com include:_hdmail.hostduplex.com -all
- MS=6A30A3DD12BA2494C34B3D5CAD9F201D7808546E
- _globalsign-domain-verification=WPFCPa0GmEiNlAuCPtyn0bXsA1gICs4HMVUhaT0Tkd
Full email verification for hostduplex.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits