active-mailsystem.de - dns.ninja

active-mailsystem.de

DNSSEC⚠️ Not signed
NSdns0.btnet.de ⭐
A2001:67c:a8:1:91:217:86:4🇩🇪 RITTERNET2001:67c:a8::/48 BTNET
PTRdns0.btnet.de
A91.217.86.4🇩🇪 RITTERNET91.217.86.0/24 BTNET
PTRdns0.btnet.de
NSdns.btnet.de
A195.243.214.4🇩🇪 DTAG195.243.0.0/16 Deutsche Telekom AG, Internet service provider
NSdns2.btnet.de
A213.68.194.51🇩🇪 AS702213.68.0.0/14 VERIZON-DE-AGG-149.228
NSdns3.btnet.de
A194.172.160.4🇩🇪 RITTERNET194.172.160.0/24
PTRmci004.btnet.de
MXsmtp1.active-mailsystem.de ⭐
A217.78.136.82🇩🇪 VERSATEL217.78.128.0/20 Versatel Deutschland
PTRsmtp1.active-mailsystem.de
MXsmtp3.active-mailsystem.de(11)
A194.172.160.82🇩🇪 RITTERNET194.172.160.0/24
PTRsmtp3.active-mailsystem.de
MXsmtp2.active-mailsystem.de(20)
A88.79.202.82🇩🇪 VODANET88.64.0.0/12 ARCOR-IP
PTRsmtp2.active-mailsystem.de
TXTv=spf1 include:_spf.rittec.de -all
SOAdns.btnet.desysadmin@btnet.de 2025-10-29 #1

de

DNSSEC🔒 Signed (DS record present)
NSf.nic.de ⭐
NSa.nic.de
NSl.de.net ⚠️ Not in parent delegation
NSn.de.net ⚠️ Not in parent delegation
NSs.de.net ⚠️ Not in parent delegation
NSz.nic.de
SOAf.nic.dedns-operations@denic.de serial=1786481316

Subdomains

smtp2.active-mailsystem.de
smtp.active-mailsystem.de
smtp3.active-mailsystem.de
smtp1.active-mailsystem.de

Same first word

active-mailsystem.de

DNS History

7 records (7 active, 0 former)

20162017201820192020202120222023202420252026NSdns.btnet.dedns0.btnet.dedns2.btnet.dedns3.btnet.deMXsmtp1.active-mailsystem.desmtp2.active-mailsystem.desmtp3.active-mailsystem.de
●NSdns.btnet.de2015-08-05 → 2026-08-11 · 2 obs
● 2015-08-05 23:22:22
● 2026-08-11 20:54:16
●NSdns0.btnet.de2026-02-24 → 2026-08-11 · 3 obs
○ 2015-08-05 23:22:22
● 2026-02-24 13:38:16
● 2026-08-11 20:54:16
●NSdns2.btnet.de2015-08-05 → 2026-08-11 · 2 obs
● 2015-08-05 23:22:22
● 2026-08-11 20:54:16
●NSdns3.btnet.de2026-02-24 → 2026-08-11 · 3 obs
○ 2015-08-05 23:22:22
● 2026-02-24 13:38:16
● 2026-08-11 20:54:16
●MXsmtp1.active-mailsystem.de2015-08-05 → 2026-08-11 · 2 obs
● 2015-08-05 23:22:22
● 2026-08-11 20:54:16
●MXsmtp2.active-mailsystem.de2015-08-05 → 2026-08-11 · 2 obs
● 2015-08-05 23:22:22
● 2026-08-11 20:54:16
●MXsmtp3.active-mailsystem.de2015-08-05 → 2026-08-11 · 2 obs
● 2015-08-05 23:22:22
● 2026-08-11 20:54:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
active-mailsystem.dedns.btnet.de, dns0.btnet.de, dns2.btnet.de, dns3.btnet.de4 records

✅ Authoritative Response

Server:195.243.214.4

NS records: dns.btnet.de, dns0.btnet.de, dns2.btnet.de, dns3.btnet.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for active-mailsystem.de (unsigned zone)

⏱️ Timing

Total: 1519ms | Queries: -

📄 Records

TypeCountSample Data
NS4dns2.btnet.de, dns0.btnet.de...
MX3smtp1.active-mailsystem.de (pri: 10), smtp2.active-mailsystem.de (pri: 20)...
TXT1v=spf1 include:_spf.rittec.de -all
SOA1dns.btnet.de sysadmin.btnet.de

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns2.btnet.de, dns0.btnet.de, dns.btnet.de...)

Analysis

Hierarchy

smtp2.active-mailsystem.de, smtp.active-mailsystem.de, smtp3.active-mailsystem.de and smtp1.active-mailsystem.de are all subdomains of active-mailsystem.de.

Name Servers

The domain active-mailsystem.de is delegated to these four name servers: dns0.btnet.de, dns2.btnet.de, dns3.btnet.de and dns.btnet.de.

The name servers of active-mailsystem.de overlap at least partially with those of other domains — among them mercedes-brand.de, mylinks.de, fliegeruhren.de and two more.

Hosts with two IP numbers each:

The A records for dns0.btnet.de return 91.217.86.4 and 2001:67c:a8:1:91:217:86:4.

Hosts that resolve to one IP address:

dns2.btnet.de resolves to the IP address 213.68.194.51.

dns3.btnet.de resolves to the IP address 194.172.160.4.

dns.btnet.de resolves to the IP address 195.243.214.4.

Mail Servers

Mail for active-mailsystem.de is routed through three mail servers — smtp1.active-mailsystem.de, smtp2.active-mailsystem.de and smtp3.active-mailsystem.de.

active-mailsystem.de shares at least some of its mail servers with other domains — for example skinhealthcare.de, lacher-shop.de, lochter.com and two more.

smtp1.active-mailsystem.de has IP address 217.78.136.82, smtp2.active-mailsystem.de has IP address 88.79.202.82 and smtp3.active-mailsystem.de has IP address 194.172.160.82 — one address each.