Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
blackned.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 12:38:48 UTC · ↺ Refresh
MX Hostnames
- blackned-de.mail.protection.outlook.com
MX Priorities
- blackned-de.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.151.128 (no PTR)
- 104.21.0.248 (no PTR)
- 2606:4700:3031::ac43:9780
- 2606:4700:3030::6815:f8
Mail Server IPs
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
SOA Record
Raw SOA
aliza.ns.cloudflare.com dns.cloudflare.com 2400269225 10000 2400 604800 1800
Primary NS (mname)
aliza.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400269225
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
aliza.ns.cloudflare.com
elliott.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.atlassian.net include:spf.emailsignatures365.com ip4:212.118.209.112/28 ip4:212.118.209.160/28 ip4:62.204.171.60 ip4:87.130.72.186 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; aspf=r; ri=604800
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- apple-domain-verification=m2qx7F53eXLpP0wN
- atlassian-domain-verification=JmgIcOt4u54nvUI96kSPjkpgw5JDr/7qGQIaaQYr27RIAPWX248v5ZtYvG5ICmmr
- bw=pWrOVnFQm3SxaFDc78C8nrqWlxp8l13xbNwEs0fTHNKK
- duo_sso_verification=rp19G7zdPaaSDkbjB3mGA1hfjseb7X5UO8EabmyKNhm6g5A3GQfNNoM2AfFIRUjy
- google-site-verification=3_bAZGlDLIR0uLPZJYyCP1dpEHCkL4_ZxMa7oJxymUg
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.atlassian.net include:spf.emailsignatures365.com ip4:212.118.209.112/28 ip4:212.118.209.160/28 ip4:62.204.171.60 ip4:87.130.72.186 -all
- MS=ms41667455
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 blackned.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits