Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ifd-koeln.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 18:26:47 UTC · ↺ Refresh
MX Hostnames
- ifdkoeln-de0i.mail.protection.outlook.com
MX Priorities
- ifdkoeln-de0i.mail.protection.outlook.com: 10
A / AAAA Records
- 37.228.156.104 ↩ cloud8-vm428.de-nserver.de
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.inwx.de hostmaster.inwx.de 2025103115 10800 3600 1209600 3600
Primary NS (mname)
ns.inwx.de
Admin Email (rname)
hostmaster@inwx.de
Serial
2025103115
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns2.inwx.de
ns.inwx.de
ns3.inwx.eu
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx a:outback.hack-attack.de a:mail03.hack-attack.de a:vpn.hack-attack.de a:tomcat.hack-attack.de include:spf.protection.outlook.com ~all
📊 DNS lookups: 7/10
~ 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
✓ 2 found
selector1._domainkey
selector2._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
2 records- SPFv=spf1 a mx a:outback.hack-attack.de a:mail03.hack-attack.de a:vpn.hack-attack.de a:tomcat.hack-attack.de include:spf.protection.outlook.com ~all
- MS=ms59586395
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 ifd-koeln.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits