isr.tu-berlin.de

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Domain Lookup › isr.tu-berlin.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
isr.tu-berlin.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-08-19 05:25:45 UTC · ↺ Refresh

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MX Hostnames

  • b1861.mx.srv.dfn.de
  • a1861.mx.srv.dfn.de
  • c1861.mx.srv.dfn.de

MX Priorities

  • c1861.mx.srv.dfn.de: 10
  • b1861.mx.srv.dfn.de: 10
  • a1861.mx.srv.dfn.de: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 194.95.238.130 ↩ c1861.mx.srv.dfn.de
  • 194.95.234.130 ↩ b1861.mx.srv.dfn.de
  • 194.95.232.130 ↩ a1861.mx.srv.dfn.de

SOA Record

Raw SOA ns.tu-berlin.de noc.tu-berlin.de 3000000401 21600 3600 2592000 900
Primary NS (mname)
ns.tu-berlin.de
Admin Email (rname)
noc@tu-berlin.de
Serial
3000000401
Refresh
21600s
Retry
3600s
Expire
2592000s
Minimum TTL
900s

Nameservers (NS)

ns.tu-berlin.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:130.149.7.33/32 ip4:130.149.7.70/32 ip4:141.23.12.141/32 ip4:141.23.12.142/32 ip4:141.23.12.143/32 ip4:194.95.233.66/32 ip4:194.95.235.66/32 ip4:194.95.239.66/32 ~all
📊 DNS lookups: 0/10
~ Soft fail (~all) — moderate 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 ip4:130.149.7.33/32 ip4:130.149.7.70/32 ip4:141.23.12.141/32 ip4:141.23.12.142/32 ip4:141.23.12.143/32 ip4:194.95.233.66/32 ip4:194.95.235.66/32 ip4:194.95.239.66/32 ~all
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