gradegroup.cz - robtex.com
gradegroup.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=1774819037 | ||||||
Same first word
gradegroup.cz |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns.sprinx.com2026-02-21 → 2026-03-29 · 2 obs
● 2026-03-29 21:35:38
●NSns.sprinx.net2026-02-21 → 2026-03-29 · 2 obs
● 2026-03-29 21:35:38
●MXgradegroup-cz.mail.protection.outlook.com2026-02-21 → 2026-03-29 · 2 obs
● 2026-03-29 21:35:38
●A23.236.62.1472026-02-21 → 2026-03-29 · 2 obs
● 2026-03-29 21:35:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| gradegroup.cz | ns.sprinx.com, ns.sprinx.net, ns.sprinx.cz | 1 record |
✅ Authoritative Response
Server:52.144.45.63
NS records: ns.sprinx.com, ns.sprinx.net, ns.sprinx.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gradegroup.cz (unsigned zone)
⏱️ Timing
Total: 1449ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.236.62.147 |
| NS | 3 | ns.sprinx.cz, ns.sprinx.com... |
| MX | 1 | gradegroup-cz.mail.protection.outlook.co |
| TXT | 1 | v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns.sprinx.cz postmaster.sprinx.cz |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns.sprinx.cz)
Analysis
IP Addresses
gradegroup.cz maps to IP address 23.236.62.147.
Other host names, for instance skillsdriving.com, calclerkofcourt.com, tommyblock.com, agrimatefencing.com and abcg.com share IP numbers with gradegroup.cz.
Name Servers
gradegroup.cz is delegated to name servers ns.sprinx.com, ns.sprinx.cz and ns.sprinx.net.
gradegroup.cz at least partially shares name servers with other domains such as sprinx.net, benefitplus.sk, myslivost.eu, sevt.eu and vychozi.cz.
These name servers are commonly used alongside smudla.svamberk.cz, ns2.livebox.cz and ns2.contactel.cz.
Host names with a single IP:
ns.sprinx.com points to 52.144.45.63
ns.sprinx.cz points to 194.212.89.20
ns.sprinx.net points to 185.220.204.185
Mail Servers
gradegroup.cz is handled by a single mail server, gradegroup-cz.mail.protection.outlook.com.
gradegroup-cz.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::2, 2a01:111:f403:ca04::b, 2a01:111:f403:ca09::b, 2a01:111:f403:ca09::c, 52.101.68.29, 52.101.73.8, 52.101.73.24 and 52.101.73.30.