companions.de

Valid Email Server
Domain Lookup › companions.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
companions.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-04 14:24:39 UTC · ↺ Refresh

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MX Hostnames

  • companions-de.mail.protection.outlook.com

MX Priorities

  • companions-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 217.160.0.245 ↩ 217-160-0-245.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 52.101.185.114 ↩ mail-zrxpr04cu00102.inbound.protection.outlook.com
  • 52.101.185.21 ↩ mail-zrxpr05cu00105.inbound.protection.outlook.com
  • 52.101.91.162 ↩ mail-matpr04cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::6 ↩ mail-zrxpr04cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com

SOA Record

Raw SOA ns1083.ui-dns.org hostmaster.1und1.com 2017060116 28800 7200 604800 600
Primary NS (mname)
ns1083.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060116
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1037.ui-dns.biz
ns1123.ui-dns.de
ns1048.ui-dns.com
ns1083.ui-dns.org

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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

1 record
  • SPFv=spf1 include:spf.protection.outlook.com -all
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