svbf.cz - robtex.com
svbf.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.0.206.51🇨🇿 CASABLANCA-AS81.0.206.0/23 Casablanca INT | ||||||
| PTR | u15.onlinehosting.cz | ||||||
| NS | ns1.onlinehosting.cz ⭐ | ||||||
| A | 217.11.236.113🇨🇿 CASABLANCA-AS217.11.236.0/24 Casablanca INT | ||||||
| PTR | u10.onlinehosting.cz | ||||||
| NS | ns2.onlinehosting.cz | ||||||
| A | 91.103.160.232🇨🇿 KAORA91.103.160.0/21 Kaora, s.r.o. | ||||||
| PTR | ns2.sunfox.cz | ||||||
| NS | ns3.onlinehosting.cz | ||||||
| A | 81.0.206.54🇨🇿 CASABLANCA-AS81.0.206.0/23 Casablanca INT | ||||||
| PTR | u15virt54.onlinehosting.cz | ||||||
| MX | mail.svbf.cz ⭐ | ||||||
| A | 85.207.17.58🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block | ||||||
| PTR | mail.as-po.cz | ||||||
| SOA | ns1.onlinehosting.cztech@internetpartner.cz serial=16 | ||||||
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=1776023235 | ||||||
Subdomains
mail.svbf.cz |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.onlinehosting.cz2015-07-11 → 2026-04-12 · 2 obs
● 2026-04-12 20:38:20
●NSns2.onlinehosting.cz2015-07-11 → 2026-04-12 · 2 obs
● 2026-04-12 20:38:20
●NSns3.onlinehosting.cz2015-07-11 → 2026-04-12 · 2 obs
● 2026-04-12 20:38:20
●MXmail.svbf.cz2015-07-11 → 2026-04-12 · 2 obs
● 2026-04-12 20:38:20
●A81.0.206.512015-07-11 → 2026-04-12 · 2 obs
● 2026-04-12 20:38:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz | - |
| svbf.cz | ns1.onlinehosting.cz, ns3.onlinehosting.cz, ns2.onlinehosting.cz | - |
✅ Authoritative Response
Server:81.0.206.54
NS records: ns1.onlinehosting.cz, ns3.onlinehosting.cz, ns2.onlinehosting.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for svbf.cz (unsigned zone)
⏱️ Timing
Total: 994ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.0.206.51 |
| NS | 3 | ns1.onlinehosting.cz, ns2.onlinehosting.cz... |
| MX | 1 | mail.svbf.cz (pri: 5) |
| SOA | 1 | ns1.onlinehosting.cz tech.internetpartne |
Analysis
Hierarchy
svbf.cz is the parent of mail.svbf.cz.
IP Addresses
svbf.cz resolves to one IP number: 81.0.206.51.
other host names including pcl.cz, hlavsa.com, psika.cz, www.cmku.cz and kosir.cz share IP numbers with svbf.cz.
Name Servers
svbf.cz is delegated to three name servers ns1.onlinehosting.cz, ns2.onlinehosting.cz and ns3.onlinehosting.cz.
svbf.cz at least partially shares name servers with other domains, for instance karolinaciakova.com, octmail.cz, equiting.com, ebcc.cz and diary.cz.
these name servers are commonly used with the name servers ns1.ceskymultihosting.cz, ns2.ceskymultihosting.cz, ns3.ceskymultihosting.cz, ns1.czechmultihosting.com, ns2.czechmultihosting.com, ns3.czechmultihosting.com, ns1.octgate.com and ns2.octgate.com.
Host names with one IP number: ns1.onlinehosting.cz points to 217.11.236.113; ns2.onlinehosting.cz points to 91.103.160.232; ns3.onlinehosting.cz points to 81.0.206.54.
Mail Servers
svbf.cz is handled by a single mail server, mail.svbf.cz.
mail.svbf.cz resolves to IP 85.207.17.58.