4n.cz - robtex.com
4n.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 46.149.113.193🇨🇿 ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o. | ||||||
| NS | ns1.one.cz ⭐ | ||||||
| A | 2001:470:6f:864::1🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns1.one.cz | ||||||
| A | 46.149.113.151🇨🇿 ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o. | ||||||
| PTR | ns1.one.cz | ||||||
| NS | ns2.one.cz | ||||||
| A | 193.85.20.140🇨🇿 TMOBILE-CZ193.85.0.0/16 T-Mobile Czech Republic a.s. | ||||||
| PTR | ns2.one.cz | ||||||
| NS | ns3.one.cz ⚠️ Not in zone NS records | ||||||
| A | 2001:470:6f:30f::1:1🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns3.one.cz | ||||||
| A | 46.149.113.187🇨🇿 ALFSERVIS-AS46.149.112.0/20 Route object 1 AlfServis s.r.o. | ||||||
| PTR | ns3.one.cz | ||||||
| SOA | ns1.one.czone@one.cz serial=2012053322 | ||||||
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=1783822639 | ||||||
Same first word
4n.net |
4n.ru |
4n.net.br |
4n.cz |
4n.eu |
4n.com.mx |
4n.hu |
4n.biz |
4n.nu |
4n.de |
4n.com |
4n.ca |
4n.nl |
4n.hk |
4n.lk |
4n.com.au |
4n.ro |
4n.pl |
4n.cn |
4n.se |
4n.com.hk |
4n.fr |
4n.org |
4n.ai |
4n.dk |
Similar names
n4.nl |
n4.net |
n4.ru |
n4.biz |
n4.de |
n4.com.my |
n4.agency |
n4.com.ua |
n4.fr |
n4.md |
n4.org |
n4.su |
n4.pl |
n4.ro |
n4.no |
n4.com |
n4.hu |
n4.cn |
n4.be |
n4.cc |
n4.cz |
n4.lt |
n4.se |
DNS History
4 records (4 active, 0 former)
●NSns3.one.cz2026-06-13 → 2026-07-12 · 3 obs
● 2026-06-13 10:24:00
● 2026-07-12 02:29:22
●A46.149.113.1932015-07-19 → 2026-07-12 · 2 obs
● 2026-07-12 02:29:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| 4n.cz | ns1.one.cz, ns2.one.cz, ns3.one.cz | 5 records |
✅ Authoritative Response
Server:46.149.113.151
NS records: ns1.one.cz, ns2.one.cz, ns3.one.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 984ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.149.113.193 |
| NS | 2 | ns2.one.cz, ns1.one.cz |
| SOA | 1 | ns1.one.cz one.one.cz |
📌 Glue Records Collected
Total: 13
In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz...)
Out-of-bailiwick: 5 (ns1.one.cz, ns1.one.cz, ns2.one.cz...)
Analysis
IP Addresses
4n.cz resolves to just one IP address, 46.149.113.193.
Two other host names, along with 0a.cz, okr.cz and golfpro.cz, also share IP numbers with 4n.cz.
Name Servers
4n.cz is delegated to three name servers: ns1.one.cz, ns2.one.cz and ns3.one.cz.
4n.cz shares at least some of its name servers with other domains, including czz.cz, acid.cz, pine.cz and two others.
Host names that have two IP addresses:
ns1.one.cz points to 46.149.113.151 and 2001:470:6f:864::1.
ns3.one.cz points to 46.149.113.187 and 2001:470:6f:30f::1:1.
Host names that point to one IP address:
ns2.one.cz points to 193.85.20.140.