rfh-campus.de - robtex.com
rfh-campus.de
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ans1.rh-koeln.de ⭐ | ||||||
| A | 195.37.23.3🇩🇪 DFN195.37.0.0/16 -AGG-3 | ||||||
| PTR | ans1.rh-koeln.de | ||||||
| NS | ans2.rh-koeln.de | ||||||
| A | 195.37.18.84🇩🇪 DFN195.37.0.0/16 -AGG-3 | ||||||
| PTR | ans2.rh-koeln.de | ||||||
| NS | deneb.dfn.de | ||||||
| A | 2001:638:800:1::9🇩🇪 DFN2001:638::/32 -V6-AGG1 | ||||||
| PTR | deneb.dfn.de | ||||||
| A | 192.76.176.9🇺🇸 DFN192.76.176.0/24 ZPL-NET | ||||||
| PTR | deneb.dfn.de | ||||||
| MX | a1851.mx.srv.dfn.de ⭐ | ||||||
| A | 194.95.232.129🇩🇪 DFN194.94.0.0/15 -AGG-16 | ||||||
| PTR | a1851.mx.srv.dfn.de | ||||||
| MX | b1851.mx.srv.dfn.de ⭐ | ||||||
| A | 194.95.234.129🇩🇪 DFN194.94.0.0/15 -AGG-16 | ||||||
| PTR | b1851.mx.srv.dfn.de | ||||||
| MX | c1851.mx.srv.dfn.de ⭐ | ||||||
| A | 194.95.238.129🇩🇪 DFN194.94.0.0/15 -AGG-16 | ||||||
| PTR | c1851.mx.srv.dfn.de | ||||||
| TXT | v=spf1 a:edumail.rfh-koeln.de a:edumail01.rfh-koeln.de a:edumail02.rfh-koeln.... | ||||||
| TXT | apple-domain-verification=IvHrzPnkbdTPWEIZ | ||||||
| TXT | HARICA-lZwuMVY7C62oAZwUIXr | ||||||
| TXT | MS=2E08EEE65FEB15D1983F96B2EED2EF5DE10F6B7C | ||||||
| TXT | adobe-idp-site-verification=934e3408e51d196824596d7102a13ee03bbf30c280675e8ba... | ||||||
| TXT | google-site-verification=AJ5_0COdVxNTsW7zIkblN3thW9h5QP8Ao9lvvHtuLVc | ||||||
| SOA | ans1.rh-koeln.dehostmaster@rfh-koeln.de 2026-02-26 #0 | ||||||
de
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | f.nic.de ⭐ | ||||||
| NS | a.nic.de | ||||||
| NS | l.de.net ⚠️ Not in parent delegation | ||||||
| NS | n.de.net ⚠️ Not in parent delegation | ||||||
| NS | s.de.net ⚠️ Not in parent delegation | ||||||
| NS | z.nic.de | ||||||
| SOA | f.nic.dedns-operations@denic.de serial=1778349957 | ||||||
Subdomains
mail.rfh-campus.de |
Same first word
rfh-campus.de |
DNS History
10 records (6 active, 4 former)
●NSans1.rh-koeln.de2026-02-18 → 2026-05-09 · 3 obs
● 2026-02-18 03:48:38
● 2026-05-09 18:30:36
●NSans2.rh-koeln.de2026-02-18 → 2026-05-09 · 3 obs
● 2026-02-18 03:48:38
● 2026-05-09 18:30:36
○NSdns1.rfh-koeln.de2015-08-14 → 2017-02-02 · 4 obs
● 2017-02-02 19:22:32
○ 2026-02-18 03:48:38
○ 2026-05-09 18:30:36
○NSdns2.rfh-koeln.de2015-08-14 → 2017-02-02 · 4 obs
● 2017-02-02 19:22:32
○ 2026-02-18 03:48:38
○ 2026-05-09 18:30:36
●MXa1851.mx.srv.dfn.de2026-02-18 → 2026-05-09 · 3 obs
● 2026-02-18 03:48:38
● 2026-05-09 18:30:36
●MXb1851.mx.srv.dfn.de2026-02-18 → 2026-05-09 · 3 obs
● 2026-02-18 03:48:38
● 2026-05-09 18:30:36
●MXc1851.mx.srv.dfn.de2026-02-18 → 2026-05-09 · 3 obs
● 2026-02-18 03:48:38
● 2026-05-09 18:30:36
○MXmail.rfh-campus.de2015-08-14 → 2017-02-02 · 4 obs
● 2017-02-02 19:22:32
○ 2026-02-18 03:48:38
○ 2026-05-09 18:30:36
○A195.37.20.1352015-08-14 → 2017-02-02 · 4 obs
● 2017-02-02 19:22:32
○ 2026-02-18 03:48:38
○ 2026-05-09 18:30:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| rfh-campus.de | ans2.rh-koeln.de, deneb.dfn.de, ans1.rh-koeln.de | 2 records |
✅ Authoritative Response
Server:192.76.176.9
NS records: ans2.rh-koeln.de, deneb.dfn.de, ans1.rh-koeln.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rfh-campus.de (unsigned zone)
⏱️ Timing
Total: 1218ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ans2.rh-koeln.de, ans1.rh-koeln.de... |
| MX | 3 | b1851.mx.srv.dfn.de (pri: 10), a1851.mx.srv.dfn.de (pri: 10)... |
| TXT | 6 | adobe-idp-site-verification=934e3408e51d, MS=2E08EEE65FEB15D1983F96B2EED2EF5DE10F6... |
| SOA | 1 | ans1.rh-koeln.de hostmaster.rfh-koeln.de |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ans1.rh-koeln.de, ans2.rh-koeln.de)
Analysis
Hierarchy
rfh-campus.de is the parent of mail.rfh-campus.de.
Name Servers
The delegation for rfh-campus.de is handled by three name servers: deneb.dfn.de, ans1.rh-koeln.de and ans2.rh-koeln.de.
rfh-campus.de shares name servers with other domains at least partially, for example sz.etc.tu-bs.de, lzpb-bremen.de, ift.ing.tu-bs.de, gardenexhibition-rostock.com and awi-bremerhaven.de.
these name servers are often used with the following: dns-2.dfn.de, dns-1.dfn.de, dns-3.dfn.de, rzdnsprime.rz.tu-bs.de, rzdnssecond.rz.tu-bs.de, ns1.staatsbibliothek-berlin.de, ns.staatsbibliothek-berlin.de, hinkelstein1.mdr.de, hinkelstein2.mdr.de and hinkelstein.mdr.de.
Host names with two IP numbers:
deneb.dfn.de points to: 2001:638:800:1::9 and 192.76.176.9.
Host names with one IP number:
ans1.rh-koeln.de points to: 195.37.23.3.
ans2.rh-koeln.de points to: 195.37.18.84.
Mail Servers
rfh-campus.de is served by three mail servers: a1851.mx.srv.dfn.de, b1851.mx.srv.dfn.de and c1851.mx.srv.dfn.de.
rfh-campus.de shares some mail servers with other domains to some extent, for instance studmail.rfh-koeln.de and rfh-koeln.de.
Host names with a single IP address: a1851.mx.srv.dfn.de points to 194.95.232.129; b1851.mx.srv.dfn.de points to 194.95.234.129; c1851.mx.srv.dfn.de points to 194.95.238.129.