acu.cz - robtex.com
acu.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a02:25b0:aaaa:1::3🇨🇿 SECURITYNET-AS2a02:25b0:aaaa::/48 SECURITYNET-2a07:dbc0::/32 | ||||||
| A | 2a02:25b0:aaaa:1::7🇨🇿 SECURITYNET-AS2a02:25b0:aaaa::/48 SECURITYNET-2a07:dbc0::/32 | ||||||
| A | 46.36.36.152🇨🇿 SECURITYNET-AS46.36.36.0/24 GTT-NET prefix | ||||||
| A | 176.102.64.64🇨🇿 SECURITYNET-AS176.102.64.0/24 SECURITYNET-176.102.64/24 | ||||||
| NS | ns1.hukot.cz ⭐ | ||||||
| A | 46.36.35.65🇨🇿 SECURITYNET-AS46.36.35.0/24 GTT-NET prefix | ||||||
| PTR | mx2.securitynet.cz | ||||||
| NS | ns2.securitynet.cz | ||||||
| A | 46.36.36.151🇨🇿 SECURITYNET-AS46.36.36.0/24 GTT-NET prefix | ||||||
| PTR | 151-36.hukot.cloud | ||||||
| NS | ns3.hukot.cz | ||||||
| A | 46.36.36.153🇨🇿 SECURITYNET-AS46.36.36.0/24 GTT-NET prefix | ||||||
| PTR | 153-36.hukot.cloud | ||||||
| MX | mail.hukot.net ⭐ | ||||||
| A | 46.36.35.152🇨🇿 SECURITYNET-AS46.36.35.0/24 GTT-NET prefix | ||||||
| PTR | mail.hukot.net | ||||||
| MX | mx2.securitynet.cz(100) | ||||||
| A | 46.36.35.65🇨🇿 SECURITYNET-AS46.36.35.0/24 GTT-NET prefix | ||||||
| PTR | mx2.securitynet.cz | ||||||
| TXT | v=spf1 a mx include:spf.hukot.net ~all | ||||||
| SOA | ns1.hukot.czhukot@hukot.cz serial=1754989505 | ||||||
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=1771291036 | ||||||
Same first word
Similar names
DNS History
13 records (9 active, 4 former)
●NSns2.securitynet.cz2015-07-18 → 2026-03-12 · 2 obs
● 2026-03-12 13:18:50
●MXmail.hukot.net2026-02-24 → 2026-03-12 · 3 obs
● 2026-02-24 13:11:10
● 2026-03-12 13:18:50
○MXmx.securitynet.cz2015-07-18 → 2017-08-29 · 4 obs
● 2017-08-29 07:47:06
○ 2026-02-24 13:11:10
○ 2026-03-12 13:18:50
●MXmx2.securitynet.cz2015-07-18 → 2026-03-12 · 2 obs
● 2026-03-12 13:18:50
●A176.102.64.642026-02-24 → 2026-03-12 · 3 obs
● 2026-02-24 13:11:10
● 2026-03-12 13:18:50
●A2a02:25b0:aaaa:1::32026-02-24 → 2026-03-12 · 3 obs
● 2026-02-24 13:11:10
● 2026-03-12 13:18:50
●A2a02:25b0:aaaa:1::72026-02-24 → 2026-03-12 · 3 obs
● 2026-02-24 13:11:10
● 2026-03-12 13:18:50
○A46.36.35.1352016-04-19 → 2016-04-27 · 5 obs
● 2016-04-19 05:08:38
● 2016-04-27 21:15:22
○ 2016-08-22 21:58:58
○ 2026-03-12 13:18:50
○A46.36.35.1552015-07-18 → 2016-04-01 · 4 obs
● 2016-04-01 01:04:08
○ 2016-04-19 05:08:38
○ 2026-03-12 13:18:50
●A46.36.36.1522026-02-24 → 2026-03-12 · 3 obs
● 2026-02-24 13:11:10
● 2026-03-12 13:18:50
○A51.254.238.682016-08-22 → 2017-08-29 · 5 obs
● 2016-08-22 21:58:58
● 2017-08-29 07:47:06
○ 2026-02-24 13:11:10
○ 2026-03-12 13:18:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| acu.cz | ns1.hukot.cz, ns2.securitynet.cz, ns3.hukot.cz | - |
✅ Authoritative Response
Server: 46.36.36.153
NS records: ns1.hukot.cz, ns2.securitynet.cz, ns3.hukot.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for acu.cz (unsigned zone)
⏱️ Timing
Total: 1847ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 46.36.36.152, 176.102.64.64 |
| AAAA | 2 | 2a02:25b0:aaaa:1::7, 2a02:25b0:aaaa:1::3 |
| NS | 3 | ns1.hukot.cz, ns3.hukot.cz... |
| MX | 2 | mail.hukot.net (pri: 10), mx2.securitynet.cz (pri: 100) |
| TXT | 1 | v=spf1 a mx include:spf.hukot.net ~all |
| SOA | 1 | ns1.hukot.cz hukot.hukot.cz |
Analysis
IP Addresses
acu.cz points to four IP numbers: 2a02:25b0:aaaa:1::3, 2a02:25b0:aaaa:1::7, 46.36.36.152 and 176.102.64.64.
Other host names, for instance 147-43-user.ktuo.cz, user211.ktuo.cz, 0-136.ktuo.cz, bartolomej.cz and 135-136.ktuo.cz share IP numbers with acu.cz.
Name Servers
The delegation for acu.cz is handled by three name servers: ns1.hukot.cz, ns3.hukot.cz and ns2.securitynet.cz.
acu.cz at least partially shares name servers with other domains, for instance evulka.eu, bezvavlasy.cz, tridac.cz, 64.102.176.in-addr.arpa and sangrededrago.cz.
Host names with one IP number:
ns1.hukot.cz points to 46.36.35.65.
ns3.hukot.cz points to 46.36.36.153.
ns2.securitynet.cz points to 46.36.36.151.
Mail Servers
acu.cz is handled by two mail servers: mx2.securitynet.cz and mail.hukot.net.
acu.cz uses the same mail server configuration as other domains, such as klom.cz, easy-shop.cz, brincil.cz, ploty-brany.eu and gtt-as.cz.
acu.cz shares mail servers with other domains at least in part, for instance awashop.cz, potiskpasek.net, klahos.cz, tipnavylet.cz and goro.cz.
These mail servers are often used together with the mail servers mx.securitynet.cz.
Host names with one IP number: mx2.securitynet.cz points to 46.36.35.65; mail.hukot.net points to 46.36.35.152.