Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nertun.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 12:01:53 UTC · ↺ Refresh
MX Hostnames
- nertun-com.mail.protection.outlook.com
MX Priorities
- nertun-com.mail.protection.outlook.com: 0
A / AAAA Records
- 185.175.199.9 (no PTR)
- 2a00:1c98:60:1181::8ed9:6771 (no PTR)
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:ca27:: ↩ mail-beup281cu00100.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
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns3.nsentry.de hostmaster.nertun.com 2026031901 86400 7200 3600000 172800
Primary NS (mname)
ns3.nsentry.de
Admin Email (rname)
hostmaster@nertun.com
Serial
2026031901
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
172800s
Nameservers (NS)
ns4.nsentry.de
ns3.nsentry.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +a:www.itcsrv6.de include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ 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
1 record- SPFv=spf1 +a +mx +a:www.itcsrv6.de include:spf.protection.outlook.com -all
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