t4d.cz - robtex.com
t4d.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2a03:3b40:fe:2cd::1🇨🇿 MASTER-AS2a03:3b40::/40 VPSFREE-IPV6-PRG2 | ||||||
| PTR | alpha.shy.cz | ||||||
| A | 37.205.13.38🇨🇿 MASTER-AS37.205.12.0/22 VPSFREE-PRG6 | ||||||
| NS | ns1.shy.cz ⭐ | ||||||
| A | 2a03:3b40:fe:2cd::1🇨🇿 MASTER-AS2a03:3b40::/40 VPSFREE-IPV6-PRG2 | ||||||
| PTR | alpha.shy.cz | ||||||
| A | 37.205.13.38🇨🇿 MASTER-AS37.205.12.0/22 VPSFREE-PRG6 | ||||||
| PTR | alpha.shy.cz | ||||||
| NS | ns2.shy.cz | ||||||
| A | 2001:470:6e:320::2🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | tunnel1019513-pt.tunnel.tserv27.prg1.ipv6.he.net | ||||||
| A | 85.163.123.206🇨🇿 CETIN-AS85.163.0.0/16 CETIN | ||||||
| PTR | beta.shy.cz | ||||||
| MX | mail.shy.cz ⭐ | ||||||
| A | 37.205.13.38🇨🇿 MASTER-AS37.205.12.0/22 VPSFREE-PRG6 | ||||||
| PTR | alpha.shy.cz | ||||||
| TXT | chal=z0jgpf | ||||||
| TXT | t-verify=82686b3bad0cb78a51241(0x62303062)5487f37 | ||||||
| TXT | protonmail-verification=4b01e8648a36bfac686149d2660032cc44ae07a1 | ||||||
| TXT | google-site-verification=LWk7WFf4QVhML85F9kgT7pi70GHLQ5X_69JAWiZAraY | ||||||
| TXT | v=spf1 include:_spf.shy.cz include:_spf.google.com include:_spf.protonmail.ch... | ||||||
| SOA | ns1.shy.czroot@shy.cz 2022-04-14 #3 | ||||||
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=1784332040 | ||||||
Same first word
t4d.cloud |
t4d.hu |
t4d.cc |
t4d.info |
t4d.cz |
t4d.org |
t4d.jp |
t4d.com |
t4d.net |
t4d.be |
t4d.biz |
t4d.com.br |
t4d.de |
t4d.io |
t4d.us |
t4d.ru |
t4d.co.ke |
t4d.ch |
Similar names
DNS History
9 records (5 active, 4 former)
○A2a01:430:27::2012016-03-09 → 2016-07-17 · 5 obs
● 2016-03-09 20:46:48
● 2016-07-17 04:18:18
○ 2026-06-12 18:06:46
○ 2026-07-18 00:22:26
○A2a01:430:27::72015-07-25 → 2015-12-02 · 4 obs
● 2015-12-02 10:49:02
○ 2016-03-09 20:46:48
○ 2026-07-18 00:22:26
●A2a03:3b40:fe:2cd::12026-06-12 → 2026-07-18 · 3 obs
● 2026-06-12 18:06:46
● 2026-07-18 00:22:26
●A37.205.13.382026-06-12 → 2026-07-18 · 3 obs
● 2026-06-12 18:06:46
● 2026-07-18 00:22:26
○A89.185.235.1992015-07-25 → 2015-12-02 · 4 obs
● 2015-12-02 10:49:02
○ 2016-03-09 20:46:48
○ 2026-07-18 00:22:26
○A89.185.235.2012016-03-09 → 2016-07-17 · 5 obs
● 2016-03-09 20:46:48
● 2016-07-17 04:18:18
○ 2026-06-12 18:06:46
○ 2026-07-18 00:22:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| t4d.cz | ns1.shy.cz, ns2.shy.cz | 4 records |
✅ Authoritative Response
Server:37.205.13.38
NS records: ns1.shy.cz, ns2.shy.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1068ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.205.13.38 |
| AAAA | 1 | 2a03:3b40:fe:2cd::1 |
| NS | 2 | ns1.shy.cz, ns2.shy.cz |
| MX | 1 | mail.shy.cz (pri: 10) |
| TXT | 5 | chal=z0jgpf, t-verify=82686b3bad0cb78a51241(0x62303062)5487f3... |
| SOA | 1 | ns1.shy.cz root.shy.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.shy.cz, ns1.shy.cz, ns2.shy.cz...)
Analysis
IP Addresses
t4d.cz directs to two IP numbers, 37.205.13.38 and 2a03:3b40:fe:2cd::1
Additional host names — shy.cz, ns2.257.cz, 257.cz and two others — share IP numbers with t4d.cz.
Name Servers
t4d.cz is served by two delegated name servers, ns1.shy.cz and ns2.shy.cz.
t4d.cz has the same name server configuration as other domains like ayn.cz and shy.cz.
The DNS delegation for t4d.cz at least partly coincides with that of other domains, 257.cz being one example.
These name servers are frequently seen alongside the name servers ns1.257.cz.
Each of the two host names carries two IP addresses: ns1.shy.cz points to 37.205.13.38 and 2a03:3b40:fe:2cd::1, and ns2.shy.cz points to 85.163.123.206 and 2001:470:6e:320::2.
Mail Servers
t4d.cz has one mail server: mail.shy.cz.
t4d.cz shares its mail server configuration with other domains, such as shy.cz and 257.cz.
There is one IP number for mail.shy.cz: 37.205.13.38.