demonstro.us

Valid Email Server
Domain Lookup › demonstro.us

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
demonstro.us
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-19 18:59:18 UTC · ↺ Refresh

MX Hostnames

  • mx01.ionos.com
  • mx00.ionos.com

MX Priorities

  • mx00.ionos.com: 10
  • mx01.ionos.com: 10

A / AAAA Records

  • 74.208.236.33 ↩ 74-208-236-33.elastic-ssl.ui-r.com
  • 2607:f1c0:100f:f000::27e ↩ 2607-f1c0-100f-f000-0000-0000-0000-027e.elastic-ssl.ui-r.com

Mail Server IPs

  • 74.208.5.3 ↩ mx00.perfora.net
  • 74.208.5.21 ↩ mx01.perfora.net

SOA Record

Raw SOA ns1054.ui-dns.com hostmaster.1and1.com 2017101218 28800 7200 604800 300
Primary NS (mname)
ns1054.ui-dns.com
Admin Email (rname)
hostmaster@1and1.com
Serial
2017101218
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1031.ui-dns.de
ns1096.ui-dns.biz
ns1032.ui-dns.org
ns1054.ui-dns.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:_spf.perfora.net include:_spf-us.ionos.com include:_spf.kundenserver.de ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate 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

✗ 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

1 record
  • SPFv=spf1 include:_spf.google.com include:_spf.perfora.net include:_spf-us.ionos.com include:_spf.kundenserver.de ~all
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