obs-book.de - robtex.com
obs-book.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=1776992381 | ||||||
MX for
obs-book.de |
Same first word
obs-book.de |
DNS History
8 records (7 active, 1 former)
●NSns4.iserv.eu2026-04-09 → 2026-04-24 · 3 obs
● 2026-04-09 11:21:20
● 2026-04-24 01:25:00
●MXobs-book.de2018-05-07 → 2026-04-24 · 2 obs
● 2026-04-24 01:25:00
○A91.16.185.892018-05-07 → 2018-05-07 · 3 obs
○ 2026-04-09 11:21:20
○ 2026-04-24 01:25:00
●A91.249.179.1142026-04-09 → 2026-04-24 · 3 obs
● 2026-04-09 11:21:20
● 2026-04-24 01:25:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| obs-book.de | ns3.iserv.eu, ns1.iserv.eu, ns2.iserv.eu, ns4.iserv.eu | - |
✅ Authoritative Response
Server:188.68.45.203
NS records: ns3.iserv.eu, ns1.iserv.eu, ns2.iserv.eu, ns4.iserv.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for obs-book.de (unsigned zone)
⏱️ Timing
Total: 1305ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.249.179.114 |
| NS | 4 | ns4.iserv.eu, ns2.iserv.eu... |
| MX | 2 | offline.iserv.eu (pri: 50), obs-book.de (pri: 10) |
| 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
obs-book.de serves as the mail server for obs-book.de.
offline.iserv.eu commonly serves as a mail server along with obs-book.de.
IP Addresses
obs-book.de points to an IP address: 91.249.179.114.
Other host names, for instance leasedline-static-091-249-179-114.ewe-ip-backbone.de, share IP numbers with obs-book.de.
Name Servers
obs-book.de delegates to four name servers: ns1.iserv.eu, ns2.iserv.eu, ns3.iserv.eu and ns4.iserv.eu.
obs-book.de at least partially shares name servers with other domains, for instance rsmisburg.de, gs-jork.de, ahs-heek.de, sts-old.de and schulzentrum-berne.de.
Host names with two IP numbers: ns1.iserv.eu points to 2a01:4f8:c01f:42::1 and 116.202.2.219; 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.
Mail Servers
Two mail servers handle obs-book.de: obs-book.de and offline.iserv.eu.
obs-book.de shares at least partially some mail servers with other domains, for instance rs-fahrn-iserv.de, gymlohne.de, renata-rs.de, georg-wagner-schule.de and lwowildau.de.
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-book.de points to 91.249.179.114.