bytes.cz - dns.ninja
bytes.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=1780921036 | ||||||
Same first word
Similar names
DNS History
13 records (8 active, 5 former)
●NSns1.poda.cz2026-03-16 → 2026-06-08 · 3 obs
● 2026-03-16 20:40:04
● 2026-06-08 13:22:56
○NSns1.skynet.cz2015-06-04 → 2019-01-27 · 4 obs
● 2019-01-27 21:42:20
○ 2026-03-16 20:40:04
○ 2026-06-08 13:22:56
●NSns2.poda.cz2026-03-16 → 2026-06-08 · 3 obs
● 2026-03-16 20:40:04
● 2026-06-08 13:22:56
○NSns2.skynet.cz2015-06-04 → 2019-01-27 · 4 obs
● 2019-01-27 21:42:20
○ 2026-03-16 20:40:04
○ 2026-06-08 13:22:56
●NSns3.poda.cz2026-03-16 → 2026-06-08 · 3 obs
● 2026-03-16 20:40:04
● 2026-06-08 13:22:56
●MXax.virusfree.cz2019-01-27 → 2026-06-08 · 3 obs
● 2019-01-27 21:42:20
● 2026-06-08 13:22:56
●MXbx.virusfree.cz2019-01-27 → 2026-06-08 · 3 obs
● 2019-01-27 21:42:20
● 2026-06-08 13:22:56
○MXbytesta-gw.bytes.cz2015-06-04 → 2017-02-05 · 4 obs
● 2017-02-05 16:16:08
○ 2019-01-27 21:42:20
○ 2026-06-08 13:22:56
●MXcx.spamfree.cz2019-01-27 → 2026-06-08 · 3 obs
● 2019-01-27 21:42:20
● 2026-06-08 13:22:56
●MXdx.spamfree.cz2019-01-27 → 2026-06-08 · 3 obs
● 2019-01-27 21:42:20
● 2026-06-08 13:22:56
○MXrelay.skynet.cz2015-06-04 → 2015-12-19 · 4 obs
● 2015-12-19 14:00:26
○ 2016-05-08 10:01:34
○ 2026-06-08 13:22:56
○MXxrelay.skynet.cz2015-06-04 → 2015-12-19 · 4 obs
● 2015-12-19 14:00:26
○ 2016-05-08 10:01:34
○ 2026-06-08 13:22:56
●A31.15.10.472019-01-27 → 2026-06-08 · 2 obs
● 2026-06-08 13:22:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | d.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz | - |
| bytes.cz | ns3.poda.cz, ns2.poda.cz, ns1.poda.cz | - |
✅ Authoritative Response
Server:89.29.29.230
NS records: ns3.poda.cz, ns2.poda.cz, ns1.poda.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bytes.cz (unsigned zone)
⏱️ Timing
Total: 1358ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 31.15.10.47 |
| NS | 3 | ns1.poda.cz, ns2.poda.cz... |
| MX | 4 | cx.spamfree.cz (pri: 12833), dx.spamfree.cz (pri: 12849)... |
| TXT | 1 | v=spf1 ip4:193.165.137.32/29 ~all |
| SOA | 1 | ns1.poda.cz hostmaster.poda.cz |
Analysis
IP Addresses
bytes.cz directs to one IP number, which is 31.15.10.47.
Among the host names that share IP numbers with bytes.cz are techniservit.cz, dobrygeodet.sk, techniserv-it.eu and two others.
Name Servers
DNS for bytes.cz is handled by three authoritative name servers: ns1.poda.cz, ns2.poda.cz and ns3.poda.cz.
bytes.cz shares at least some of its name servers with other domains, including 145.165.193.in-addr.arpa, 116.215.164.in-addr.arpa, 102.242.94.in-addr.arpa and two others.
These name servers are frequently paired with the name servers ns1.k2datovecentrum.cz, ns2.k2datovecentrum.cz and ns3.k2datovecentrum.cz.
Hosts with two IP numbers each:
ns1.poda.cz has two IP addresses: 89.29.29.230 and 2a00:ca8:591d:1de0::591d:1de6.
ns3.poda.cz has two IP addresses: 81.31.42.139 and 2a01:430:111::139.
Host names with one IP number:
ns2.poda.cz directs to 178.248.9.14.
Mail Servers
bytes.cz is handled by 4 mail servers: cx.spamfree.cz, dx.spamfree.cz, ax.virusfree.cz and bx.virusfree.cz.
bytes.cz shares at least some of its mail servers with other domains — for example karatsoftware.com, amenit.cz, cymedica.cz and two more.
cx.spamfree.cz, dx.spamfree.cz, ax.virusfree.cz and bx.virusfree.cz each resolve to two IP addresses. cx.spamfree.cz points to 195.24.76.170 and 2001:67c:15a3::d1. dx.spamfree.cz points to 195.24.76.170 and 2001:67c:15a3::d1. ax.virusfree.cz points to 31.7.241.24 and 2001:67c:15a1::a1. bx.virusfree.cz points to 89.187.156.46 and 2001:67c:15a2::b1.
Host names pointing to 2001:67c:15a3::d1 IP addresses: cx.spamfree.cz and dx.spamfree.cz.
Host names pointing to 195.24.76.170 IP addresses: cx.spamfree.cz and dx.spamfree.cz.