johschool.com - robtex.com
johschool.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 146.0.43.36🇩🇪 MYLOC-AS146.0.32.0/20 myLoc managed IT AG | ||||||
| PTR | al080.albit.dedi.server-hosting.expert | ||||||
| NS | knuth.ihsdns.com ⭐ | ||||||
| A | 94.138.196.9🇹🇷 AS4912694.138.196.0/24 VmNetwork | ||||||
| NS | dijkstra.ihsdns.com | ||||||
| A | 167.172.166.241🇩🇪 DIGITALOCEAN167.172.160.0/20 DigitalOcean | ||||||
| PTR | dijkstra.ihsdns.com | ||||||
| MX | mail.johschool.com ⭐ | ||||||
| A | 146.0.43.36🇩🇪 MYLOC-AS146.0.32.0/20 myLoc managed IT AG | ||||||
| PTR | al080.albit.dedi.server-hosting.expert | ||||||
| SOA | knuth.ihsdns.comdnsadmin@ihs.com.tr 2019-07-01 #0 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774542387 | ||||||
Subdomains
mail.johschool.com |
Same first word
johschool.com |
DNS History
11 records (4 active, 7 former)
●NSdijkstra.ihsdns.com2026-02-26 → 2026-03-26 · 3 obs
● 2026-02-26 00:14:04
● 2026-03-26 16:30:20
○NShan1.trdns.com2015-08-10 → 2016-09-13 · 4 obs
● 2016-09-13 20:35:28
○ 2017-04-19 01:41:44
○ 2026-03-26 16:30:20
○NShan2.trdns.com2015-08-10 → 2016-09-13 · 4 obs
● 2016-09-13 20:35:28
○ 2017-04-19 01:41:44
○ 2026-03-26 16:30:20
○NShan3.trdns.com2017-04-19 → 2017-04-19 · 4 obs
● 2017-04-19 01:41:44
○ 2026-02-26 00:14:04
○ 2026-03-26 16:30:20
○NShan4.trdns.com2017-04-19 → 2017-04-19 · 4 obs
● 2017-04-19 01:41:44
○ 2026-02-26 00:14:04
○ 2026-03-26 16:30:20
●NSknuth.ihsdns.com2026-02-26 → 2026-03-26 · 3 obs
● 2026-02-26 00:14:04
● 2026-03-26 16:30:20
○NSorhancam2015-08-10 → 2016-09-13 · 4 obs
● 2016-09-13 20:35:28
○ 2017-04-19 01:41:44
○ 2026-03-26 16:30:20
●MXmail.johschool.com2015-08-10 → 2026-03-26 · 2 obs
● 2026-03-26 16:30:20
●A146.0.43.362026-02-26 → 2026-03-26 · 3 obs
● 2026-02-26 00:14:04
● 2026-03-26 16:30:20
○A77.245.144.1402017-04-19 → 2017-04-19 · 4 obs
● 2017-04-19 01:41:44
○ 2026-02-26 00:14:04
○ 2026-03-26 16:30:20
○A77.245.144.2412015-08-10 → 2016-09-13 · 4 obs
● 2016-09-13 20:35:28
○ 2017-04-19 01:41:44
○ 2026-03-26 16:30:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net... | - |
| johschool.com | knuth.ihsdns.com, dijkstra.ihsdns.com | 2 records |
✅ Authoritative Response
Server:94.138.196.9
NS records: knuth.ihsdns.com, dijkstra.ihsdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for johschool.com (unsigned zone)
⏱️ Timing
Total: 394ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 146.0.43.36 |
| NS | 2 | dijkstra.ihsdns.com, knuth.ihsdns.com |
| MX | 1 | mail.johschool.com (pri: 10) |
| SOA | 1 | knuth.ihsdns.com dnsadmin.ihs.com.tr |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (knuth.ihsdns.com, dijkstra.ihsdns.com)
Analysis
Hierarchy
The parent of mail.johschool.com is johschool.com.
IP Addresses
johschool.com points to a single IP address: 146.0.43.36.
Other host names such as mail.javstudies.com, usved.com, mail.aizanoiacademia.com, aizanoiacademia.com and cahij.com share IPs with johschool.com.
Name Servers
Two name servers dijkstra.ihsdns.com and knuth.ihsdns.com handle the delegation for johschool.com.
johschool.com shares the same name server setup as other domains, for example cablechainsystems.com, yagevi.com, zeonsaat.com, tconcept.com.tr and hareketlikablok(0x616e616c)lari.com.
johschool.com shares name servers with other domains at least partially, for instance ccsd.com.tr.
Host names with one IP number:
dijkstra.ihsdns.com points to 167.172.166.241; knuth.ihsdns.com points to 94.138.196.9.
Mail Servers
The mail.johschool.com mail server handles johschool.com.
mail.johschool.com points to a single IP number: 146.0.43.36.