Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
spektrum.de
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 22:42:23 UTC · ↺ Refresh
MX Hostnames
- mxb-002c5801.gslb.pphosted.com
- mxa-002c5801.gslb.pphosted.com
MX Priorities
- mxb-002c5801.gslb.pphosted.com: 20
- mxa-002c5801.gslb.pphosted.com: 10
A / AAAA Records
- 151.101.2.132 (no PTR)
- 151.101.194.132 (no PTR)
- 151.101.66.132 (no PTR)
- 151.101.130.132 (no PTR)
Mail Server IPs
- 185.183.28.43 ↩ mx08-002c5801.pphosted.com
- 185.132.180.79 ↩ mx07-002c5801.pphosted.com
SOA Record
Raw SOA
a.ns14.net digital.spektrum.de 2025120800 43200 7200 1209600 86400
Primary NS (mname)
a.ns14.net
Admin Email (rname)
digital@spektrum.de
Serial
2025120800
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
d.ns14.net
b.ns14.net
a.ns14.net
c.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:195.128.10.15/32 ip4:195.128.10.18/32 ip4:148.251.217.244/32 ip4:212.21.170.196/32 ip4:212.21.170.182/32 ip4:199.168.14.54/32 include:spf-002c5801.pphosted.com include:amazonses.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; sp=none; aspf=r;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- cisco-ci-domain-verification=5bb4ceb849e38c199dccdfa34101051ac1e5b7f57dbf2ad16e8cdf8429aaaba9
- brevo-code:3022b29c6069a0b2ab4ad1eae06d06df
- MS=ms20744618
- SPFv=spf1 a mx ip4:195.128.10.15/32 ip4:195.128.10.18/32 ip4:148.251.217.244/32 ip4:212.21.170.196/32 ip4:212.21.170.182/32 ip4:199.168.14.54/32 include:spf-002c5801.pphosted.com include:amazonses.com -all
- monday-com-verification=gIfsbiBtQzvmY8SR8gmXmURzurNdeyafwCzP_vHk4wk
- onetrust-domain-verification=13f142ba100a4b88aaba4a6e1102cde5
- docusign=7f13fe88-8e09-4c3f-9d2d-9c50a2991ab8
- zapier-domain-verification-challenge=19ab0fb9-731c-4da1-946f-121aa68f6a2c
- monday-com-verification=gAZywa4vaGsfLg6nd5lzh_H0u2mYn7u-W075cd-3X78
- google-site-verification=ibTUzbPN5zmQ4prYzWVsks7lGFJrCaBhAog_MW7g5co
- openai-domain-verification=dv-tm1EOrVdxJc74WHLQJcRsUny
- adobe-idp-site-verification=e7d316e26179ad0d4b3f90cf2a0754eec7efe5ffd4e42fd68fb1bf562238e1e5
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for spektrum.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits