bluen.cz - robtex.com
bluen.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=1783262840 | ||||||
Subdomains
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSns.forpsi.net2015-08-21 → 2026-07-05 · 2 obs
● 2026-07-05 15:08:34
●MXbluen-cz.mail.protection.outlook.com2017-11-17 → 2026-07-05 · 3 obs
● 2017-11-17 17:00:06
● 2026-07-05 15:08:34
●MXcompany.bluen.cz2015-08-21 → 2026-07-05 · 2 obs
● 2026-07-05 15:08:34
○A176.12.116.2042015-08-21 → 2016-11-26 · 4 obs
● 2016-11-26 07:55:44
○ 2017-11-17 17:00:06
○ 2026-07-05 15:08:34
●A81.2.195.1452017-11-17 → 2026-07-05 · 3 obs
● 2017-11-17 17:00:06
● 2026-07-05 15:08:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| bluen.cz | ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net | 2 records |
✅ Authoritative Response
Server:81.2.209.185
NS records: ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1112ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.2.195.145 |
| NS | 3 | ns.forpsi.cz, ns.forpsi.it... |
| MX | 2 | bluen-cz.mail.protection.outlook.com (pr, company.bluen.cz (pri: 10) |
| TXT | 2 | MS=ms51580743, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns.forpsi.net admin.forpsi.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns.forpsi.cz, ns.forpsi.cz)
Analysis
Hierarchy
*.bluen.cz and company.bluen.cz are both subdomains of bluen.cz.
IP Addresses
bluen.cz resolves to one IP address: 81.2.195.145.
critti.cz, chlazeniholice.cz, erd.cz and two other host names share IP numbers with bluen.cz.
Name Servers
bluen.cz carries NS records delegating to ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.
bluen.cz partially shares its NS delegation with several other domains, including jasof.cz, fiat-praha.cz, miluji-pivo.cz and two others.
These name servers often co-occur with the name servers ns.forpsi.us.
ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net are three hostnames that each resolve to a pair of IP addresses: ns.forpsi.cz to 81.2.209.185 and 2001:15e8:201:1::d1b9, ns.forpsi.it to 95.110.254.165 and 2a00:6d41:2:1::5, and ns.forpsi.net to 81.2.194.130 and 2001:15e8:101:1::c282.
Mail Servers
Mail for bluen.cz is handled by two mail servers — company.bluen.cz and bluen-cz.mail.protection.outlook.com.
Hostnames that resolve to 8 IP addresses:
bluen-cz.mail.protection.outlook.com resolves to 52.101.68.3, 52.101.68.16 and 52.101.68.32 among others, with 5 other IP addresses in total.
Hosts with just one IP address:
The hostname company.bluen.cz resolves to 176.12.119.250.