blb-online.com

Valid Email Server
Domain Lookup › blb-online.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
blb-online.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 13:00:48 UTC · ↺ Refresh

MX Hostnames

  • mx00.ionos.de
  • mx01.ionos.de

MX Priorities

  • mx00.ionos.de: 10
  • mx01.ionos.de: 10

A / AAAA Records

  • 217.160.0.235 ↩ 217-160-0-235.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

  • 212.227.15.41 ↩ mx00.kundenserver.de
  • 217.72.192.67 ↩ mx01.kundenserver.de

SOA Record

Raw SOA ns1055.ui-dns.com hostmaster.1und1.com 2017060118 28800 7200 604800 600
Primary NS (mname)
ns1055.ui-dns.com
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060118
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1124.ui-dns.de
ns1055.ui-dns.com
ns1087.ui-dns.biz
ns1069.ui-dns.org

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf-eu.ionos.com ~all
📊 DNS lookups: 1/10
~ 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-eu.ionos.com ~all
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