Domain Overview
DNS: ✓ 13d ago
Checker: ✓ 13d ago
ace-online.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-08-19 08:11:11 UTC · ↺ Refresh
MX Hostnames
- aceonline-de0i.mail.protection.outlook.com
MX Priorities
- aceonline-de0i.mail.protection.outlook.com: 10
A / AAAA Records
- 194.6.209.173 ↩ srv-a-cc.c-1678.maxcluster.net
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1102.ui-dns.biz hostmaster.1und1.com 2017060158 28800 7200 604800 600
Primary NS (mname)
ns1102.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060158
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1067.ui-dns.com
ns1102.ui-dns.biz
ns1023.ui-dns.de
ns1112.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 a:mail.ace.de ip4:87.234.225.28 include:spf.protection.outlook.com include:spf.dynect.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- mMh86OBzz0OvN/gRlkg0U3ULqNChOQOfLCSujClvOotZ3Q9IiuLKhjhIdqTg8fsoM8dVIhuCO4lFoeFh9bFCNQ==
- SPFv=spf1 a:mail.ace.de ip4:87.234.225.28 include:spf.protection.outlook.com include:spf.dynect.net -all
- MS=ms81133184
- atlassian-domain-verification=6DNbbktJpVgOiZ4lWqBmkRJNva5dXLa2JWMQuALVp667npFjhywAkAXpQhpVCy6f
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