schulserver.org - robtex.com
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=1773551953 | ||||||
MX for
schulserver.org |
Same first word
DNS History
14 records (12 active, 2 former)
●NSns3.iserv.eu2016-11-09 → 2026-03-17 · 3 obs
● 2016-11-09 06:27:36
● 2026-03-17 06:45:22
●NSns4.iserv.eu2026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
●MXoffline.iserv.eu2015-06-04 → 2026-03-17 · 5 obs
● 2016-04-15 23:50:04
○ 2016-11-09 06:27:36
● 2017-06-05 18:12:14
● 2026-03-17 06:45:22
●MXschulserver.org2015-06-04 → 2026-03-17 · 2 obs
● 2026-03-17 06:45:22
●A116.202.2.2552026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
●A116.203.121.1852026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
○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
○ 2026-03-17 06:45:22
●A188.68.60.92026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
●A2a01:4f8:c01f:4a::12026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
●A2a01:4f8:c0c:ae45::12026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
●A2a03:4000:1b:738::12026-02-19 → 2026-03-17 · 3 obs
● 2026-02-19 23:48:58
● 2026-03-17 06:45:22
○A5.9.186.452015-06-04 → 2016-04-15 · 4 obs
● 2016-04-15 23:50:04
○ 2016-11-09 06:27:36
○ 2026-03-17 06:45:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| schulserver.org | ns1.iserv.eu, ns3.iserv.eu, ns4.iserv.eu, ns2.iserv.eu | - |
✅ Authoritative Response
Server: 116.202.2.219
NS records: ns1.iserv.eu, ns3.iserv.eu, ns4.iserv.eu, ns2.iserv.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for schulserver.org (unsigned zone)
⏱️ Timing
Total: 1055ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 188.68.60.9, 116.202.2.255... |
| AAAA | 3 | 2a01:4f8:c0c:ae45::1, 2a03:4000:1b:738::1... |
| NS | 4 | ns1.iserv.eu, ns3.iserv.eu... |
| MX | 2 | schulserver.org (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
schulserver.org serves as a mail server for schulserver.org.
offline.iserv.eu commonly serves as a mail server together with schulserver.org.
IP Addresses
schulserver.org maps to six IP numbers: 2a01:4f8:c0c:ae45::1, 2a01:4f8:c01f:4a::1, 2a03:4000:1b:738::1, 116.202.2.255, 116.203.121.185 and 188.68.60.9.
Other host names, for instance www.in45minuten.com, www2.iserv.eu, www.iserv.de, iserv.host and iserv.dev share IP numbers with schulserver.org.
Name Servers
schulserver.org is delegated to four name servers: ns1.iserv.eu, ns2.iserv.eu, ns3.iserv.eu and ns4.iserv.eu.
schulserver.org at least partially shares its name servers with other domains, for instance greutschule.de, gs-me.de, gs-veltenhof.de, gs-heidberg.de and elternkammer-hamburg.de.
Host names with two IPs: 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
schulserver.org is handled by two mail servers: schulserver.org and offline.iserv.eu.
schulserver.org shares some mail servers with other domains, including schule-steimbke.de, obsdel.de, iserv-bk.de, hsdissen.de and lns-kiel.de.
Host names with six IP numbers: schulserver.org points to 2a01:4f8:c0c:ae45::1, 2a01:4f8:c01f:4a::1, 2a03:4000:1b:738::1, 116.202.2.255, 116.203.121.185 and 188.68.60.9.
Host names with two IP numbers: offline.iserv.eu points to 2a01:4f8:c2c:4863::1 and 159.69.47.32.