net4net.cz - robtex.com
net4net.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 212.80.66.30🇨🇿 QUANTCOM-AS212.80.64.0/19 Dial Telecom, a.s. | ||||||
| PTR | web.tgnet.cz | ||||||
| NS | names.dialtelecom.cz ⭐ | ||||||
| A | 2001:1508:1003:1::2🇨🇿 QUANTCOM-AS2001:1508::/32 | ||||||
| PTR | names.dialtelecom.cz | ||||||
| A | 195.250.136.2🇨🇿 QUANTCOM-AS195.250.128.0/19 | ||||||
| PTR | names.dialtelecom.cz | ||||||
| NS | sns.dialtelecom.cz | ||||||
| A | 2001:1508:1003:2::4🇨🇿 QUANTCOM-AS2001:1508::/32 | ||||||
| PTR | sns.dialtelecom.cz | ||||||
| A | 195.250.128.2🇨🇿 QUANTCOM-AS195.250.128.0/19 | ||||||
| PTR | sns.dialtelecom.cz | ||||||
| MX | mail.dialtelecom.cz ⭐ | ||||||
| A | 212.27.214.2🇨🇿 QUANTCOM-AS212.27.192.0/19 | ||||||
| PTR | mail.dialtelecom.cz | ||||||
| MX | mxbackup.dialtelecom.cz(20) | ||||||
| A | 62.4.96.148🇨🇿 QUANTCOM-AS62.4.96.0/21 | ||||||
| PTR | mxbackup.dialtelecom.cz | ||||||
| SOA | names.dialtelecom.czhostmaster@dialtelecom.cz 2026-03-28 #1 | ||||||
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=1774743438 | ||||||
Same first word
Similar names
DNS History
7 records (5 active, 2 former)
●NSnames.dialtelecom.cz2015-08-20 → 2026-03-29 · 2 obs
● 2026-03-29 00:42:46
●NSsns.dialtelecom.cz2015-08-20 → 2026-03-29 · 2 obs
● 2026-03-29 00:42:46
●MXmail.dialtelecom.cz2017-03-20 → 2026-03-29 · 3 obs
● 2017-03-20 02:41:36
● 2026-03-29 00:42:46
○MXmedea.dialtelecom.cz2015-08-20 → 2016-08-02 · 4 obs
● 2016-08-02 08:25:00
○ 2017-03-20 02:41:36
○ 2026-03-29 00:42:46
●MXmxbackup.dialtelecom.cz2017-03-20 → 2026-03-29 · 3 obs
● 2017-03-20 02:41:36
● 2026-03-29 00:42:46
○MXrelay.dialtelecom.cz2015-08-20 → 2016-08-02 · 4 obs
● 2016-08-02 08:25:00
○ 2017-03-20 02:41:36
○ 2026-03-29 00:42:46
●A212.80.66.302015-08-20 → 2026-03-29 · 2 obs
● 2026-03-29 00:42:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| net4net.cz | names.dialtelecom.cz, sns.dialtelecom.cz | 4 records |
✅ Authoritative Response
Server:195.250.136.2
NS records: names.dialtelecom.cz, sns.dialtelecom.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for net4net.cz (unsigned zone)
⏱️ Timing
Total: 809ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.80.66.30 |
| NS | 2 | sns.dialtelecom.cz, names.dialtelecom.cz |
| MX | 2 | mail.dialtelecom.cz (pri: 10), mxbackup.dialtelecom.cz (pri: 20) |
| SOA | 1 | names.dialtelecom.cz hostmaster.dialtele |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (names.dialtelecom.cz, sns.dialtelecom.cz, names.dialtelecom.cz...)
Analysis
IP Addresses
net4net.cz points to a single IP: 212.80.66.30.
Other host names such as web.tgnet.cz, tgnet.cz, transgasnet.cz and czmail.cz share IP numbers with net4net.cz.
Name Servers
net4net.cz's delegation is to two name servers names.dialtelecom.cz and sns.dialtelecom.cz.
net4net.cz shares the same name server configuration as other domains, such as 102.177.62.in-addr.arpa, incompliance.cz, presto-skola.cz, provider.cz and customer.vol.cz.
net4net.cz at least partially shares its name servers with other domains, for instance czmap.cz, 82.177.62.in-addr.arpa, ecdpit.cz, devcon.sk and 159.250.195.in-addr.arpa.
these name servers are commonly used with the name servers names.vol.cz, sns.vol.cz, ns.eon.cz, ns.inway.cz and ns.inway.net.
Host names with two IP numbers: names.dialtelecom.cz points to 2001:1508:1003:1::2 and 195.250.136.2; sns.dialtelecom.cz points to 2001:1508:1003:2::4 and 195.250.128.2
Mail Servers
Two mail servers mail.dialtelecom.cz and mxbackup.dialtelecom.cz handle net4net.cz.
net4net.cz uses the same mail server setup as other domains such as way.cz, kriminologie.cz, ok.cz, obcaneprotihazardu.cz and sdsl.cz.
net4net.cz shares some mail servers with other domains, including humusoft.cz, rentexpert.cz, mbox.vol.cz, progresscycle.cz and skupina.hm.
these mail servers are often used alongside the mail servers weed.humusoft.cz, mail.novumglobal.eu, mail.autobond.cz and mail.median.cz.
Host names with a single IP:
mail.dialtelecom.cz resolves to 212.27.214.2.
mxbackup.dialtelecom.cz resolves to 62.4.96.148.