obs-gs.de - robtex.com
obs-gs.de
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=1776218965 | ||||||
MX for
obs-gs.de |
Same first word
obs-gs.de |
Similar names
DNS History
8 records (7 active, 1 former)
●MXobs-gs.de2018-05-08 → 2026-04-15 · 2 obs
● 2026-04-15 02:21:24
○A91.16.181.372018-05-08 → 2018-05-08 · 2 obs
○ 2026-04-15 02:21:24
●A91.249.218.1862026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 02:21:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| obs-gs.de | ns3.iserv.eu, ns2.iserv.eu, ns1.iserv.eu, ns4.iserv.eu | - |
✅ Authoritative Response
Server:116.203.7.41
NS records: ns3.iserv.eu, ns2.iserv.eu, ns1.iserv.eu, ns4.iserv.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for obs-gs.de (unsigned zone)
⏱️ Timing
Total: 1471ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.249.218.186 |
| NS | 4 | ns2.iserv.eu, ns1.iserv.eu... |
| MX | 2 | obs-gs.de (pri: 10), offline.iserv.eu (pri: 50) |
| TXT | 1 | v=spf1 a mx a:relay1.iserv.eu a:relay2.i |
| SOA | 1 | ns1.iserv.eu hostmaster.iserv.eu |
Analysis
Mail Server Role
For obs-gs.de, the mail server is obs-gs.de.
offline.iserv.eu is a common mail server alongside obs-gs.de.
IP Addresses
obs-gs.de points to a single IP number: 91.249.218.186.
Other host names like obs-ganderkesee.de and leasedline-static-091-249-218-186.ewe-ip-backbone.de share IP numbers with obs-gs.de.
Name Servers
obs-gs.de is delegated to four name servers: ns1.iserv.eu, ns2.iserv.eu, ns3.iserv.eu and ns4.iserv.eu.
obs-gs.de at least partially shares name servers with other domains, for instance obs-w.de, hmg-leutkirch.de, hrs-clz.de, hauptschuleengter.de and ge-globus-zweigstelle.de.
Two IPs for hosts:
ns2.iserv.eu points to: 2a03:4000:20:19b::1 and 91.204.44.133
ns3.iserv.eu points to: 2a01:4f8:1c0c:8111::1 and 116.203.7.41
ns4.iserv.eu points to: 2a03:4000:20:19e::1 and 188.68.45.203
One IP for a host:
ns1.iserv.eu points to: 116.202.2.219
Mail Servers
Two mail servers handle obs-gs.de: obs-gs.de and offline.iserv.eu.
obs-gs.de shares mail servers with other domains at least partially, including schulen-givb.de, schulelindern.net, avh.hamburg, csintern.de and schule-sad.org.
these mail servers are commonly used alongside iserv.iserv.eu.
Host names with two IP numbers: offline.iserv.eu points to 2a01:4f8:c2c:4863::1 and 159.69.47.32.
Host names with one IP number: obs-gs.de points to 91.249.218.186.