top21.de

Valid Email Server
Domain Lookup › top21.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
top21.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-04 16:38:19 UTC · ↺ Refresh

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MX Hostnames

  • top21-de.mail.protection.outlook.com

MX Priorities

  • top21-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 108.138.128.55 ↩ server-108-138-128-55.jfk50.r.cloudfront.net
  • 108.138.128.114 ↩ server-108-138-128-114.jfk50.r.cloudfront.net
  • 108.138.128.7
  • 108.138.128.96
  • 2600:9000:24f1:800:16:9192:4600:93a1
  • 2600:9000:24f1:9a00:16:9192:4600:93a1
  • 2600:9000:24f1:3200:16:9192:4600:93a1
  • 2600:9000:24f1:7400:16:9192:4600:93a1
  • 2600:9000:24f1:3c00:16:9192:4600:93a1
  • 2600:9000:24f1:600:16:9192:4600:93a1
  • 2600:9000:24f1:a400:16:9192:4600:93a1
  • 2600:9000:24f1:c200:16:9192:4600:93a1

Mail Server IPs

  • 52.101.103.140 ↩ mail-miypr02cu00204.inbound.protection.outlook.com
  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:ca48::c ↩ mail-miypr03cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1351.awsdns-40.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1351.awsdns-40.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-447.awsdns-55.com
ns-859.awsdns-43.net
ns-1351.awsdns-40.org
ns-1594.awsdns-07.co.uk

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

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

2 records
  • MS=ms89159103
  • btf76f60ht7hdytlv5rrsr0bplcckv11
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