decoder.cz - robtex.com
decoder.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 75.2.70.75🇺🇸 Amazon75.2.64.0/20 | ||||||
| PTR | aacb0a264e514dd48.awsglobalaccelerator.com | ||||||
| A | 99.83.190.102🇺🇸 Amazon99.83.176.0/20 | ||||||
| NS | ns1.websupport.cz ⭐ | ||||||
| A | 2a10:bbc0::11🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns1.websupport.eu | ||||||
| A | 45.10.97.11🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns1.websupport.eu | ||||||
| NS | ns2.websupport.cz | ||||||
| A | 2a02:250:3::12🇸🇪 ACTIVE24-AS2a02:250:3::/48 | ||||||
| PTR | ns2.websupport.eu | ||||||
| A | 185.71.159.12🇸🇪 ACTIVE24-AS185.71.159.0/24 | ||||||
| PTR | ns2.websupport.eu | ||||||
| NS | ns3.websupport.eu | ||||||
| A | 2a10:bbc0::13🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns3.websupport.eu | ||||||
| A | 45.10.97.13🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns3.websupport.eu | ||||||
| MX | mailin1.decoder.cz ⭐ | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:85🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| A | 45.13.137.9🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24 | ||||||
| PTR | m1-u7-mx.websupport.sk | ||||||
| MX | mailin2.decoder.cz(100) | ||||||
| A | 2a00:4b40:aaaa:2101:45:13:137:110🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32 | ||||||
| PTR | mx10.websupport.sk | ||||||
| A | 45.13.137.111🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24 | ||||||
| PTR | m1-u7-mx.websupport.sk | ||||||
| SOA | ns1.websupport.czadmin@websupport.cz serial=1775042990 | ||||||
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=1783756038 | ||||||
Subdomains
Same first word
Similar names
DNS History
16 records (7 active, 9 former)
○NSalfa.ns.active24.cz2015-07-17 → 2026-03-31 · 4 obs
● 2026-03-31 17:58:44
○ 2026-04-04 18:16:58
○ 2026-07-11 09:05:48
○NSbeta.ns.active24.cz2015-07-17 → 2026-03-31 · 4 obs
● 2026-03-31 17:58:44
○ 2026-04-04 18:16:58
○ 2026-07-11 09:05:48
○NSgama.ns.active24.sk2015-07-17 → 2026-03-31 · 4 obs
● 2026-03-31 17:58:44
○ 2026-04-04 18:16:58
○ 2026-07-11 09:05:48
●NSns1.websupport.cz2026-04-04 → 2026-07-11 · 3 obs
● 2026-04-04 18:16:58
● 2026-07-11 09:05:48
●NSns2.websupport.cz2026-04-04 → 2026-07-11 · 3 obs
● 2026-04-04 18:16:58
● 2026-07-11 09:05:48
●NSns3.websupport.eu2026-04-04 → 2026-07-11 · 3 obs
● 2026-04-04 18:16:58
● 2026-07-11 09:05:48
○MXin.smtp.cz2015-07-17 → 2017-01-02 · 4 obs
● 2017-01-02 22:08:42
○ 2017-11-24 17:21:18
○ 2026-07-11 09:05:48
●MXmailin1.decoder.cz2026-04-04 → 2026-07-11 · 3 obs
● 2026-04-04 18:16:58
● 2026-07-11 09:05:48
●MXmailin2.decoder.cz2026-04-04 → 2026-07-11 · 3 obs
● 2026-04-04 18:16:58
● 2026-07-11 09:05:48
○MXmx.smtp.cz2015-07-17 → 2017-01-02 · 4 obs
● 2017-01-02 22:08:42
○ 2017-11-24 17:21:18
○ 2026-07-11 09:05:48
○MXmx1.active24.com2017-11-24 → 2026-03-31 · 5 obs
● 2017-11-24 17:21:18
● 2026-03-31 17:58:44
○ 2026-04-04 18:16:58
○ 2026-07-11 09:05:48
○MXmx2.active24.com2017-11-24 → 2026-03-31 · 5 obs
● 2017-11-24 17:21:18
● 2026-03-31 17:58:44
○ 2026-04-04 18:16:58
○ 2026-07-11 09:05:48
○A2a02:4a8:ac24:104::98:1592015-07-17 → 2017-11-24 · 4 obs
● 2017-11-24 17:21:18
○ 2026-03-31 12:16:54
○ 2026-07-11 09:05:48
●A75.2.70.752026-03-31 → 2026-07-11 · 3 obs
● 2026-03-31 12:16:54
● 2026-07-11 09:05:48
○A81.95.98.1592015-07-17 → 2017-11-24 · 4 obs
● 2017-11-24 17:21:18
○ 2026-03-31 12:16:54
○ 2026-07-11 09:05:48
●A99.83.190.1022026-03-31 → 2026-07-11 · 3 obs
● 2026-03-31 12:16:54
● 2026-07-11 09:05:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| decoder.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.11
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 995ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 75.2.70.75, 99.83.190.102 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mailin1.decoder.cz (pri: 10), mailin2.decoder.cz (pri: 100) |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
decoder.cz is a parent domain, with mailin1.decoder.cz, mailin2.decoder.cz and www.decoder.cz beneath it.
IP Addresses
decoder.cz directs to two IP numbers, 75.2.70.75 and 99.83.190.102
Among the host names that share IP numbers with decoder.cz are karenjo.com, superbrass.co.uk, obi.gg and two others.
Name Servers
The authoritative name servers for decoder.cz are ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu — three in total.
decoder.cz has at least partial name server overlap with other domains, such as garden-technik.cz, happy-pet.cz, makra.cz and two others.
ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu all resolve to exactly two IP numbers apiece: ns1.websupport.cz → 45.10.97.11 and 2a10:bbc0::11; ns2.websupport.cz → 185.71.159.12 and 2a02:250:3::12; ns3.websupport.eu → 45.10.97.13 and 2a10:bbc0::13.
Mail Servers
The MX records for decoder.cz point to two mail servers: mailin1.decoder.cz and mailin2.decoder.cz.
The two host names mailin1.decoder.cz and mailin2.decoder.cz each have a pair of IP addresses: mailin1.decoder.cz has 45.13.137.9 and 2a00:4b40:aaaa:2101:45:13:137:85, and mailin2.decoder.cz has 45.13.137.111 and 2a00:4b40:aaaa:2101:45:13:137:110.