schulserver.org - dns.ninja
schulserver.org
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1786262377 | ||||||
MX for
schulserver.org |
Same first word
DNS History
14 records (12 active, 2 former)
●NSns3.iserv.eu2016-11-09 → 2026-08-09 · 3 obs
● 2016-11-09 06:27:36
● 2026-08-09 08:07:22
●NSns4.iserv.eu2026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
●MXoffline.iserv.eu2015-06-04 → 2026-08-09 · 5 obs
● 2016-04-15 23:50:04
○ 2016-11-09 06:27:36
● 2017-06-05 18:12:14
● 2026-08-09 08:07:22
●MXschulserver.org2015-06-04 → 2026-08-09 · 2 obs
● 2026-08-09 08:07:22
●A116.202.2.2552026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
●A116.203.121.1852026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
○A136.243.213.992016-11-09 → 2017-06-05 · 5 obs
● 2016-11-09 06:27:36
● 2017-06-05 18:12:14
○ 2026-02-19 23:48:58
○ 2026-08-09 08:07:22
●A188.68.60.92026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
●A2a01:4f8:c01f:4a::12026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
●A2a01:4f8:c0c:ae45::12026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
●A2a03:4000:1b:738::12026-02-19 → 2026-08-09 · 3 obs
● 2026-02-19 23:48:58
● 2026-08-09 08:07:22
○A5.9.186.452015-06-04 → 2016-04-15 · 4 obs
● 2016-04-15 23:50:04
○ 2016-11-09 06:27:36
○ 2026-08-09 08:07:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | d0.org.afilias-nst.org, b2.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| schulserver.org | 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 schulserver.org (unsigned zone)
⏱️ Timing
Total: 951ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 188.68.60.9, 116.202.2.255... |
| AAAA | 3 | 2a03:4000:1b:738::1, 2a01:4f8:c0c:ae45::1... |
| NS | 4 | ns1.iserv.eu, ns3.iserv.eu... |
| MX | 2 | offline.iserv.eu (pri: 50), schulserver.org (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
schulserver.org is listed as a mail server for itself.
offline.iserv.eu is often seen acting as a mail server in combination with schulserver.org.
IP Addresses
schulserver.org has 6 IP addresses — 116.202.2.255, 116.203.121.185, 188.68.60.9 and 3 more.
www.in45minuten.com, www2.iserv.eu, www.iserv.de and two other host names share IP numbers with schulserver.org.
Name Servers
The authoritative name servers for schulserver.org are ns1.iserv.eu, ns2.iserv.eu, ns3.iserv.eu and ns4.iserv.eu.
schulserver.org partially shares its NS delegation with several other domains, including greutschule.de, gs-me.de, gs-veltenhof.de and two others.
ns1.iserv.eu, ns2.iserv.eu, ns3.iserv.eu and ns4.iserv.eu each carry two IP addresses. ns1.iserv.eu has 116.202.2.219 and 2a01:4f8:c01f:42::1; ns2.iserv.eu has 91.204.44.133 and 2a03:4000:20:19b::1; ns3.iserv.eu has 116.203.7.41 and 2a01:4f8:1c0c:8111::1; ns4.iserv.eu has 188.68.45.203 and 2a03:4000:20:19e::1.
Mail Servers
schulserver.org uses two mail servers, schulserver.org and offline.iserv.eu.
schulserver.org has at least partial mail server overlap with other domains such as dammgrundschule.de, schule-steimbke.de, obsdel.de and two more.
Hostnames that resolve to 6 IP addresses:
schulserver.org has IP addresses 116.202.2.255, 116.203.121.185 and 188.68.60.9, plus 3 other.
Hostnames that resolve to two IP addresses:
offline.iserv.eu has two IP addresses: 159.69.47.32 and 2a01:4f8:c2c:4863::1.