Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cto.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 14:40:01 UTC · ↺ Refresh
MX Hostnames
- cto-de.mail.protection.outlook.com
MX Priorities
- cto-de.mail.protection.outlook.com: 0
A / AAAA Records
- 167.99.137.105 (no PTR)
Mail Server IPs
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.udag.de hostmaster.united-domains.de 2024041053 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024041053
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.udag.de
ns.udag.org
ns.udag.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:188.111.33.162 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:48046331.spf03.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=0;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
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
10 records- google-site-verification=r270JmQRoc05GUqg4x5Hrd3UYZtp0-ieRo60j7jmBrk
- SPFv=spf1 ip4:188.111.33.162 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:48046331.spf03.hubspotemail.net -all
- cciverification:idG8sFXyRIWlnHSlmkdZ7A
- google-site-verification=1-laK5GRlBkv4J9gTExB_g4KNGIqhNCUnWIKgloft4Y
- apple-domain-verification=Y7uOzJsMPkaeb4AQ
- logmein-verification-code=68237fc7-5162-4b67-838d-24077b88999d
- cciverification:RdYUUzP4SUKaV4-l-dpIJg
- _056hjdli6rxw9b9f6q78y5wrv72dlz6
- cciverification:J27UbRvlSoeQT2v2p4ILFw
- apple-domain-verification=yHhVd-whc2jb9KrK75gHosAsOwNFh6rKHDPJBl-tCEY
Full email verification for cto.de
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