Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fsb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 15:37:19 UTC · ↺ Refresh
MX Hostnames
- fsb-de.mail.protection.outlook.com
MX Priorities
- fsb-de.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.207.220 (no PTR)
- 104.21.22.241 (no PTR)
- 2606:4700:3033::ac43:cfdc
- 2606:4700:3035::6815:16f1
Mail Server IPs
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
elsa.ns.cloudflare.com dns.cloudflare.com 2397677125 10000 2400 604800 1800
Primary NS (mname)
elsa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397677125
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
guy.ns.cloudflare.com
elsa.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:80.228.56.208/28 ip4:155.56.208.100/30 ip4:157.133.97.216/30 ip4:169.145.66.70/31 ip4:169.145.66.72/31 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ 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
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
10 records- _wuf6qwvbskjgqzhnfsak2teaiqo5535
- apple-domain-verification=oQXcDgq7sa4KW5Jn
- atlassian-domain-verification=qipnsqjj1Iw60LYla1S0ahsgUmnQkSpucN2g8LyfEP5Q/wkN9F1ePuwtlbg93nbs
- brevo-code:40229ce94cd40d3ae0902c9d52865caa
- klaviyo-site-verification=QPDdqH
- SPFv=spf1 mx a ip4:80.228.56.208/28 ip4:155.56.208.100/30 ip4:157.133.97.216/30 ip4:169.145.66.70/31 ip4:169.145.66.72/31 include:spf.protection.outlook.com -all
- 3pxsldql7gkdfy0c6wfycwlbfy53nlq7
- MS=56456564B11267BD62E44D3EFDB93FD7F5A4BF4D
- MS=mss4ln3hb8m
- _gs8pl0uwsdm50s31cg4oynadfzgju1k
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