virtusgroup.cz - robtex.com
virtusgroup.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 81.91.86.11🇨🇿 WEB4U81.91.80.0/21 | ||||||
| PTR | php5.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 | 54.69.1.140🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix | ||||||
| PTR | ec2-54-69-1-140.us-west-2.compute.amazonaws.com | ||||||
| MX | mx2.mailchannels.net ⭐ | ||||||
| A | 54.69.1.140🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix | ||||||
| PTR | ec2-54-69-1-140.us-west-2.compute.amazonaws.com | ||||||
| TXT | v=spf1 include:_spf.web4u.cz ~all | ||||||
| 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=1774828036 | ||||||
Same first word
virtusgroup.ca |
virtusgroup.biz |
virtusgroup.cz |
virtusgroup.co.uk |
virtusgroup.ru |
virtusgroup.com |
virtusgroup.it |
Similar names
DNS History
7 records (5 active, 2 former)
○MXmail.virtusgroup.cz2015-07-03 → 2017-02-12 · 4 obs
● 2017-02-12 00:46:28
○ 2020-03-24 21:23:56
○ 2026-03-30 00:32:12
○MXmx.web4u.cz2020-03-24 → 2020-03-24 · 3 obs
● 2020-03-24 21:23:56
○ 2026-03-30 00:32:12
●MXmx1.mailchannels.net2026-03-30 → 2026-03-30 · 2 obs
● 2026-03-30 00:32:12
●MXmx2.mailchannels.net2026-03-30 → 2026-03-30 · 2 obs
● 2026-03-30 00:32:12
●A81.91.86.112015-07-03 → 2026-03-30 · 2 obs
● 2026-03-30 00:32:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| virtusgroup.cz | ns.web4u.cz, ns2.web4u.cz | 4 records |
✅ Authoritative Response
Server:185.14.224.241
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1215ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.11 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 2 | mx1.mailchannels.net (pri: 10), mx2.mailchannels.net (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.web4u.cz ~all |
| 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
virtusgroup.cz points to a single IP number: 81.91.86.11.
Other host names, for instance fastman.cz, unassigned-81-91-81-185.web4u.cz, rocenka.eu, larsenstrings.cz and onavi.cz share IP numbers with virtusgroup.cz.
Name Servers
virtusgroup.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
virtusgroup.cz uses the same name server setup as other domains, for instance eurokasa.cz, tanec-ostrava.cz, relaxbali.cz, behprosvetlusku.cz and pozari.cz.
Host names with two IP numbers:
The host ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12.
The host ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
virtusgroup.cz is handled by two mail servers: mx1.mailchannels.net and mx2.mailchannels.net.
virtusgroup.cz shares the same mail server setup as other domains, including mail.cocoahigh76.com, avkomp.com.au, corsoniagara.com, lallacunaonline.cat and pasotours.com.
At least part of virtusgroup.cz's mail servers are shared with other domains, for instance modehuset.se and 103060.se.
Host names with a single IP number:
mx1.mailchannels.net points to 54.69.1.140.
mx2.mailchannels.net points to 54.69.1.140.
Host names pointing to 54.69.1.140: mx1.mailchannels.net and mx2.mailchannels.net.