e-isb.cz - robtex.com
e-isb.cz
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1777438035 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●MXeisb-cz0c.mail.protection.outlook.com2026-04-24 → 2026-04-29 · 2 obs
● 2026-04-29 05:11:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz | - |
| e-isb.cz | ns.pse.cz, ns2.pse.cz, nsc.pse.cz | 3 records |
✅ Authoritative Response
Server:194.228.61.90
NS records: ns.pse.cz, ns2.pse.cz, nsc.pse.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 976ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | nsc.pse.cz, ns2.pse.cz... |
| MX | 1 | eisb-cz0c.mail.protection.outlook.com (p |
| TXT | 2 | MS=ms77594147, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns.pse.cz postmaster.pse.cz |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns.pse.cz, ns2.pse.cz, nsc.pse.cz)
Analysis
Name Servers
e-isb.cz is delegated to three name servers: ns2.pse.cz, ns.pse.cz and nsc.pse.cz.
e-isb.cz at least partially shares name servers with other domains, including pseac.org, pxe.cz, pse.eu, pxe.hu and bcpp.cz.
Hostnames with a single IP:
ns2.pse.cz points to: 91.193.134.187.
ns.pse.cz points to: 91.193.132.187.
nsc.pse.cz points to: 194.228.61.90.
Mail Servers
e-isb.cz is handled by a single mail server, eisb-cz0c.mail.protection.outlook.com.
Hostname eisb-cz0c.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::, 2a01:111:f403:ca04::b, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::1, 52.101.68.39, 52.101.73.19, 52.101.73.26 and 52.101.73.153.