co-in.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
co-in.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-26 19:59:30 UTC · ↺ Refresh

MX Hostnames

  • coin-de0e.mail.protection.outlook.com

MX Priorities

  • coin-de0e.mail.protection.outlook.com: 10

A / AAAA Records

  • 144.76.190.62 ↩ webserver.cologne-intelligence.de

Mail Server IPs

  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com

SOA Record

Raw SOA dns11.netcologne.de hostmaster.netcologne.de 2026031602 28800 7200 604800 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2026031602
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

dns11.netcologne.de
dns14.netcologne.de
dns13.netcologne.de
dns12.netcologne.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:195.14.212.153 ip4:213.168.124.250 include:_spf.atlassian.net include:spf.protection.outlook.com include:spf.emailsignatures365.com include:spf.nl2go.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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

5 records
  • SPFv=spf1 a mx ip4:195.14.212.153 ip4:213.168.124.250 include:_spf.atlassian.net include:spf.protection.outlook.com include:spf.emailsignatures365.com include:spf.nl2go.com -all
  • MS=ms46780161
  • atlassian-domain-verification=Nh2xFffLnza/TMsKKOBx7LgbC2k3DXVKMvGMnX0eqKkXWgUwe43HRP6E7/iAFYPG
  • atlassian-domain-verification=gbJZ/mscKH6XudGr7HwFf1rNI2xbA2Q8R9sE29TmwBYrhUbO3UFJB2iDmRs9hLwn
  • 5k6hvdv8dnjp3mwmsptpk44n80134cs4
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 co-in.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits