sefer.cz - robtex.com
sefer.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=1786339040 | ||||||
Subdomains
www.sefer.cz |
Same first word
sefer.com.br |
sefer.it |
sefer.net |
sefer.com |
sefer.fr |
sefer.info |
sefer.me |
sefer.eu |
sefer.cz |
sefer.biz |
sefer.es |
sefer.pl |
sefer.de |
sefer.co |
sefer.at |
Similar names
DNS History
9 records (6 active, 3 former)
●NSns1.profitux.cz2015-07-24 → 2026-08-10 · 2 obs
● 2026-08-10 05:42:28
●NSns2.profitux.cz2015-07-24 → 2026-08-10 · 2 obs
● 2026-08-10 05:42:28
●MXbackupmx.profitux.cz2015-07-24 → 2026-08-10 · 2 obs
● 2026-08-10 05:42:28
●MXmx.profitux.cz2026-06-23 → 2026-08-10 · 3 obs
● 2026-06-23 04:56:52
● 2026-08-10 05:42:28
○MXpmail.profitux.cz2015-07-24 → 2017-04-15 · 4 obs
● 2017-04-15 17:55:50
○ 2026-06-23 04:56:52
○ 2026-08-10 05:42:28
○A2001:1528:157:0:52:d0:2f:872015-07-24 → 2017-04-15 · 4 obs
● 2017-04-15 17:55:50
○ 2026-06-23 04:56:52
○ 2026-08-10 05:42:28
●A2001:1ab0:7e1e:151::982026-06-23 → 2026-08-10 · 3 obs
● 2026-06-23 04:56:52
● 2026-08-10 05:42:28
●A62.109.151.982026-06-23 → 2026-08-10 · 3 obs
● 2026-06-23 04:56:52
● 2026-08-10 05:42:28
○A82.208.47.1352015-07-24 → 2017-04-15 · 4 obs
● 2017-04-15 17:55:50
○ 2026-06-23 04:56:52
○ 2026-08-10 05:42:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| sefer.cz | ns1.profitux.cz, ns2.profitux.cz | 3 records |
✅ Authoritative Response
Server:217.31.48.201
NS records: ns1.profitux.cz, ns2.profitux.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sefer.cz (unsigned zone)
⏱️ Timing
Total: 984ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 62.109.151.98 |
| AAAA | 1 | 2001:1ab0:7e1e:151::98 |
| NS | 2 | ns1.profitux.cz, ns2.profitux.cz |
| MX | 2 | mx.profitux.cz (pri: 10), backupmx.profitux.cz (pri: 20) |
| TXT | 1 | v=spf1 a mx include:_spf.webglobe.com ~a |
| SOA | 1 | ns1.profitux.cz admin.sefer.cz |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.profitux.cz, ns1.profitux.cz, ns2.profitux.cz)
Analysis
Hierarchy
www.sefer.cz is delegated beneath sefer.cz.
IP Addresses
sefer.cz points to the IP addresses 62.109.151.98 and 2001:1ab0:7e1e:151::98
rousavy.info, rory.profitux.cz, jerabek.eu and two other host names share IP numbers with sefer.cz.
Name Servers
Two name servers handle the delegation for sefer.cz: ns1.profitux.cz and ns2.profitux.cz.
sefer.cz uses the same name servers as several other domains — among them freddy.cz, ammax.org, corponex.cz and two more.
There is at least partial name server overlap between sefer.cz and other domains — autobazarastra.cz, profitux.cz, adamplhacek.com and two more among them.
These name servers regularly appear alongside ns2.ignum.cz, ns1.ignum.eu, ns2.ignum.eu and 5 other name servers in NS record sets.
ns1.profitux.cz and ns2.profitux.cz both carry two IP addresses. The A records for ns1.profitux.cz are 185.65.223.35 and 2a00:1e40:a:53::5; the A records for ns2.profitux.cz are 217.31.48.201 and 2001:1ab0:7e1e:2::5.
Mail Servers
Mail for sefer.cz is handled by two mail servers — backupmx.profitux.cz and mx.profitux.cz.
sefer.cz uses an identical mail server configuration to several other domains — among them cellin.cz, ski-telnice.cz, ivek.cz and two more.
sefer.cz has at least partial mail server overlap with other domains such as proclima.cz, coptercam.cz, profiburo.com and two more.
Hostnames that resolve to two IP addresses:
mx.profitux.cz resolves to two addresses: 62.109.128.119 and 185.102.21.66.
Hosts with just one IP address:
The hostname backupmx.profitux.cz resolves to 185.102.21.66.
mx.profitux.cz along with backupmx.profitux.cz each resolve to 185.102.21.66 IP addresses.