projectzone.cz - robtex.com
projectzone.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 81.91.86.12🇨🇿 WEB4U81.91.80.0/21 | ||||||
| PTR | php53.web4u.cz | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| A | 2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s. | ||||||
| PTR | ns2.web4u.cz | ||||||
| A | 85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block | ||||||
| PTR | ns2.web4u.cz | ||||||
| NS | ns.web4u.cz | ||||||
| A | 2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 185.14.224.241🇨🇿 WEB4U185.14.224.0/23 | ||||||
| PTR | ns.web4u.cz | ||||||
| MX | mx1.mailchannels.net ⭐ | ||||||
| A | 18.236.29.166🇺🇸 Amazon18.236.0.0/15 EC2 PDX prefix | ||||||
| PTR | ec2-18-236-29-166.us-west-2.compute.amazonaws.com | ||||||
| MX | mx2.mailchannels.net ⭐ | ||||||
| A | 18.236.29.166🇺🇸 Amazon18.236.0.0/15 EC2 PDX prefix | ||||||
| PTR | ec2-18-236-29-166.us-west-2.compute.amazonaws.com | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2025-05-03 #0 | ||||||
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=1776311236 | ||||||
Same first word
projectzone.ru |
projectzone.cz |
Similar names
DNS History
6 records (5 active, 1 former)
○MXmail.projectzone.cz2015-06-21 → 2018-07-02 · 3 obs
● 2018-07-02 17:43:18
○ 2026-04-16 04:13:38
●MXmx1.mailchannels.net2026-04-16 → 2026-04-16 · 2 obs
● 2026-04-16 04:13:38
●MXmx2.mailchannels.net2026-04-16 → 2026-04-16 · 2 obs
● 2026-04-16 04:13:38
●A81.91.86.122015-06-21 → 2026-04-16 · 2 obs
● 2026-04-16 04:13:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz | - |
| projectzone.cz | ns.web4u.cz, ns2.web4u.cz | 4 records |
✅ Authoritative Response
Server:85.207.53.12
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 704ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.12 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 2 | mx1.mailchannels.net (pri: 10), mx2.mailchannels.net (pri: 10) |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
IP Addresses
projectzone.cz points to a single IP address: 81.91.86.12.
Other host names such as *.tyfo.cz, naradikolin.com, helpforexpats.cz, kasalovapila.eu and posilatko.cz share IPs with projectzone.cz.
Name Servers
Two name servers ns2.web4u.cz and ns.web4u.cz handle the delegation for projectzone.cz.
projectzone.cz shares the same name server setup as other domains, for example calvin-klein-pradlo.cz, klee.cz, arpartnerjh.cz, durelis.info and ordinace-praha4.cz.
Host names with two IP numbers:
ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12.
ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
Two mail servers handle projectzone.cz: mx1.mailchannels.net and mx2.mailchannels.net.
projectzone.cz shares the same mail server setup as other domains, including emcss.org, flashtake.com.au, hrdu.com, danielsevcik.com and incusoft.com.
projectzone.cz shares at least some mail servers with other domains, for example searchmobius.org and larssonsgravyr.se.
Host names with a single IP:
mx1.mailchannels.net points to 18.236.29.166.
mx2.mailchannels.net points to 18.236.29.166.
Host names pointing to 18.236.29.166: mx1.mailchannels.net and mx2.mailchannels.net.