q-plus.cz - robtex.com
q-plus.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=1775933254 | ||||||
Subdomains
mail.q-plus.cz |
Same first word
DNS History
5 records (4 active, 1 former)
○MXmail.q-plus.cz2015-05-30 → 2015-11-14 · 4 obs
● 2015-11-14 10:57:10
○ 2016-02-18 10:46:08
○ 2026-04-11 19:27:46
●MXqplus-cz0c.mail.protection.outlook.com2016-02-18 → 2026-04-11 · 3 obs
● 2016-02-18 10:46:08
● 2026-04-11 19:27:46
●A81.91.86.112015-05-30 → 2026-04-11 · 2 obs
● 2026-04-11 19:27:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| q-plus.cz | ns.web4u.cz, ns2.web4u.cz | 4 records |
✅ Authoritative Response
Server:185.14.224.241
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1125ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.11 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 1 | qplus-cz0c.mail.protection.outlook.com ( |
| TXT | 2 | MS=ms52083243, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 12
In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz...)
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
Hierarchy
q-plus.cz is the parent of mail.q-plus.cz.
IP Addresses
q-plus.cz points to IP number 81.91.86.11.
For instance, other host names unassigned-195-39-95-231.web4u.cz, unassigned-81-91-92-214.web4u.cz, www.autoskolastart.cz, fasko.org and unassigned-82-208-36-95.web4u.cz share IP numbers with q-plus.cz.
Name Servers
q-plus.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
q-plus.cz uses the same name server setup as other domains such as toall.cz, czp-msk.cz, lokoc.com, pikron.com and echomutov.cz.
q-plus.cz shares name servers with other domains at least partially, for example spravadomen.org.
Host names with two IP numbers:
ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12; ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
q-plus.cz is handled by a single mail server, qplus-cz0c.mail.protection.outlook.com.
Host name qplus-cz0c.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::, 2a01:111:f403:ca04::5, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::4, 52.101.68.10, 52.101.68.12, 52.101.73.12 and 52.101.73.30.