o2security.cz - robtex.com
o2security.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=1774532836 | ||||||
Subdomains
corpcheck.o2security.cz |
Same first word
o2security.cz |
o2security.com |
DNS History
4 records (4 active, 0 former)
●MXo2security-cz.mail.protection.outlook.com2026-02-18 → 2026-03-26 · 2 obs
● 2026-03-26 14:24:18
●A217.198.116.1882026-02-18 → 2026-03-26 · 2 obs
● 2026-03-26 14:24:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| o2security.cz | dns.iol.cz, ns2.tel.cz | 4 records |
✅ Authoritative Response
Server:194.228.2.61
NS records: dns.iol.cz, ns2.tel.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for o2security.cz (unsigned zone)
⏱️ Timing
Total: 996ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.198.116.188 |
| NS | 2 | dns.iol.cz, ns2.tel.cz |
| MX | 1 | o2security-cz.mail.protection.outlook.co |
| TXT | 2 | MS=ms46403011, v=spf1 a:smtpe21.o2.cz a:smtpe22.o2.cz i |
| SOA | 1 | dns.iol.cz hostmaster.iol.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.tel.cz, dns.iol.cz, ns2.tel.cz...)
Analysis
Hierarchy
o2security.cz is a parent of corpcheck.o2security.cz.
IP Addresses
o2security.cz points to a single IP number: 217.198.116.188.
Other host names, for instance emato.cz, gyber.cz, www.cesky-obchodni-dum.com, www.hoffmann-zizak.cz and slovnifotbal.cz share IP numbers with o2security.cz.
Name Servers
Delegation for o2security.cz rests with two name servers, dns.iol.cz and ns2.tel.cz.
o2security.cz shares the same name server setup as other domains, including 2.182.90.in-addr.arpa, 142.178.90.in-addr.arpa, 103.103.88.in-addr.arpa, 201.228.194.in-addr.arpa and 151.176.90.in-addr.arpa.
Host names with two IP numbers: dns.iol.cz points to 2a00:1028:100:102::61 and 194.228.2.61; ns2.tel.cz points to 2a00:1028:1:205::2 and 194.228.2.1.
Mail Servers
o2security.cz is handled by a single mail server, o2security-cz.mail.protection.outlook.com.
o2security-cz.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:ca04::, 2a01:111:f403:ca04::b, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::20, 52.101.68.0, 52.101.68.15, 52.101.73.2 and 52.101.73.30.