3group.cz - robtex.com
3group.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 91.239.200.44🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot | ||||||
| PTR | lanstrom.thinline.cz | ||||||
| NS | ns.forpsi.net ⭐ | ||||||
| A | 2001:15e8:101:1::c282🇨🇿 INTERNET-CZ2001:15e8::/32 | ||||||
| PTR | ns.forpsi.net | ||||||
| A | 81.2.194.130🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s. | ||||||
| PTR | ns.forpsi.net | ||||||
| NS | ns.forpsi.cz | ||||||
| A | 2001:15e8:201:1::d1b9🇨🇿 INTERNET-CZ2001:15e8::/32 | ||||||
| PTR | ns.forpsi.cz | ||||||
| A | 81.2.209.185🇨🇿 INTERNET-CZ81.2.209.0/24 | ||||||
| PTR | ns.forpsi.cz | ||||||
| NS | ns.forpsi.it | ||||||
| A | 2a00:6d41:2:1::5🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network | ||||||
| PTR | ns.forpsi.it | ||||||
| A | 95.110.254.165🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network | ||||||
| PTR | host165-254-110-95.serverdedicati.aruba.it | ||||||
| MX | mail.rywasoft.net ⭐ | ||||||
| A | 95.173.69.199🇨🇿 HA-VEL-LOCAL-AS95.173.64.0/19 ha-vel internet s.r.o. | ||||||
| PTR | mail.rywasoft.net | ||||||
| TXT | MS=8816BA52DB3463EC14532CB18B0D909F6D65365E | ||||||
| TXT | google-site-verification=6NUBYuGZjtaQEcu5rLuL2qjw6J9Vr9dylfbCP_QHYHM | ||||||
| TXT | google-site-verification=j_dDxdeRtk37kUCUusa2KzlkyerLvUjBnw-ve0qLyGE | ||||||
| TXT | v=spf1 ip4:81.19.8.132 ip4:84.42.160.157 ip4:80.250.30.178 ip4:78.44.61.38 mx... | ||||||
| SOA | ns.forpsi.netadmin@forpsi.com 2026-03-11 #1 | ||||||
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=1774741636 | ||||||
Subdomains
srv.3group.cz |
Same first word
Similar names
group3.be |
group3.us |
grupo3.com.br |
group3.co |
group3.de |
group3.net |
3grupo.com |
grupo3.net |
group3.co.th |
group3.com |
group3.gr |
group3.org |
group3.co.za |
group3.ro |
grupo3.tur.br |
grupo3.com.sv |
group3.ca |
DNS History
14 records (5 active, 9 former)
●NSns.forpsi.cz2017-04-09 → 2026-03-29 · 3 obs
● 2017-04-09 19:43:14
● 2026-03-29 00:23:02
●NSns.forpsi.it2017-04-09 → 2026-03-29 · 3 obs
● 2017-04-09 19:43:14
● 2026-03-29 00:23:02
●NSns.forpsi.net2017-04-09 → 2026-03-29 · 3 obs
● 2017-04-09 19:43:14
● 2026-03-29 00:23:02
○NSns1.regzone.cz2015-06-22 → 2016-05-04 · 4 obs
● 2016-05-04 10:15:32
○ 2017-04-09 19:43:14
○ 2026-03-29 00:23:02
○NSns1.regzone.de2015-06-22 → 2016-05-04 · 4 obs
● 2016-05-04 10:15:32
○ 2017-04-09 19:43:14
○ 2026-03-29 00:23:02
○NSns1.regzone.info2015-06-22 → 2016-05-04 · 4 obs
● 2016-05-04 10:15:32
○ 2017-04-09 19:43:14
○ 2026-03-29 00:23:02
○MX10mx.zoner.com2015-06-22 → 2016-05-04 · 4 obs
● 2016-05-04 10:15:32
○ 2017-04-09 19:43:14
○ 2026-03-29 00:23:02
○MX15mx.zoner.com2015-06-22 → 2016-05-04 · 4 obs
● 2016-05-04 10:15:32
○ 2017-04-09 19:43:14
○ 2026-03-29 00:23:02
○MXdsl.3group.cz2017-04-09 → 2017-04-09 · 4 obs
● 2017-04-09 19:43:14
○ 2026-03-01 07:31:32
○ 2026-03-29 00:23:02
●MXmail.rywasoft.net2026-03-01 → 2026-03-29 · 3 obs
● 2026-03-01 07:31:32
● 2026-03-29 00:23:02
○MXsrv.3group.cz2017-04-09 → 2017-04-09 · 4 obs
● 2017-04-09 19:43:14
○ 2026-03-01 07:31:32
○ 2026-03-29 00:23:02
○MXvendiwatch.rywasoft.net2015-06-22 → 2016-05-04 · 4 obs
● 2016-05-04 10:15:32
○ 2017-04-09 19:43:14
○ 2026-03-29 00:23:02
○A193.105.159.1422015-06-22 → 2017-04-09 · 4 obs
● 2017-04-09 19:43:14
○ 2026-03-01 07:31:32
○ 2026-03-29 00:23:02
●A91.239.200.442026-03-01 → 2026-03-29 · 3 obs
● 2026-03-01 07:31:32
● 2026-03-29 00:23:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| 3group.cz | ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net | 2 records |
✅ Authoritative Response
Server:81.2.194.130
NS records: ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1506ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.239.200.44 |
| NS | 3 | ns.forpsi.cz, ns.forpsi.it... |
| MX | 1 | mail.rywasoft.net (pri: 5) |
| TXT | 4 | MS=8816BA52DB3463EC14532CB18B0D909F6D653, google-site-verification=6NUBYuGZjtaQEcu... |
| SOA | 1 | ns.forpsi.net admin.forpsi.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns.forpsi.cz, ns.forpsi.cz)
Analysis
Hierarchy
3group.cz is the parent of srv.3group.cz.
IP Addresses
3group.cz points to a single IP number: 91.239.200.44.
other host names for instance drawingeggen.com, stilista.cz, kodk.eu, sefor.cz and vyroubal-legal.cz share IP numbers with 3group.cz.
Name Servers
3group.cz is delegated to three name servers: ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.
3group.cz at least partially shares name servers with other domains, for instance etrk.cz, stromsky.cz, a15.eu, prowifi.cz and prouti.eu.
These name servers are commonly used with the name servers ns.forpsi.us.
Host names with two IP numbers:
Host ns.forpsi.cz points to 2001:15e8:201:1::d1b9 and 81.2.209.185.
Host ns.forpsi.it points to 2a00:6d41:2:1::5 and 95.110.254.165.
Host ns.forpsi.net points to 2001:15e8:101:1::c282 and 81.2.194.130.
Mail Servers
3group.cz is handled by a single mail server, mail.rywasoft.net.
3group.cz shares the same mail server setup as other domains, for instance rywasoft.net, rywa.net, ssg.cz, centrumdvorak.cz and imeco.cz.
Host name mail.rywasoft.net points to IP address 95.173.69.199.