Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
k16.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 06:13:43 UTC · ↺ Refresh
MX Hostnames
- k16-de.mail.protection.outlook.com
MX Priorities
- k16-de.mail.protection.outlook.com: 10
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1125.ui-dns.com hostmaster.1und1.de 2017062128 28800 7200 604800 300
Primary NS (mname)
ns1125.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2017062128
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1125.ui-dns.com
ns1125.ui-dns.org
ns1125.ui-dns.biz
ns1125.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:213.61.82.2 ip4:213.61.82.3 ip4:213.61.82.4 ip4:20.113.37.148 include:spf.protection.outlook.com include:spf.nl2go.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; ruf=mailto:[email protected]; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
8 records- apple-domain-verification=V3xCRfyjxojrLimH
- MS=4B9C722022920E08EC889970F6DB2EDDEEF11D36
- miro-verification=57b3bd48c6974acd22cdfe530185f2b925607421
- google-site-verification=yHZqKI8-U70c3X1UZrlp-Qj_MBAGcs_ZEdj6NPRXzVE
- SPFv=spf1 ip4:213.61.82.2 ip4:213.61.82.3 ip4:213.61.82.4 ip4:20.113.37.148 include:spf.protection.outlook.com include:spf.nl2go.com include:spf-de.emailsignatures365.com -all
- brevo-code:a7027278d0185dca5dc2d33e9c15c8ce
- MS=ms73628744
- google-site-verification=Qrm9QZGxn7rPtP-10MmuXZPjwzxcCbSBeRjoBMdlKdM
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