penicka.cz - robtex.com
penicka.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2001:1568::12🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | php53.web4u.cz | ||||||
| A | 2001:1568::14🇨🇿 WEB4U2001:1568::/33 | ||||||
| A | 81.91.86.12🇨🇿 WEB4U81.91.80.0/21 | ||||||
| A | 81.91.86.14🇨🇿 WEB4U81.91.80.0/21 | ||||||
| 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 | 54.187.177.89🇺🇸 Amazon54.186.0.0/15 EC2 PDX prefix | ||||||
| PTR | ec2-54-187-177-89.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 a:rs31.web4u.cz a:www-relay.web4u.cz ip4:81.91.86.9 ip4:10.1.0.0/16 ip... | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2025-05-04 #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=1777016834 | ||||||
Same first word
penicka.cz |
Similar names
DNS History
9 records (8 active, 1 former)
○MXmail.penicka.cz2015-07-10 → 2017-04-19 · 4 obs
● 2017-04-19 03:03:40
○ 2026-04-07 22:09:04
○ 2026-04-24 08:30:34
●MXmx1.mailchannels.net2026-04-07 → 2026-04-24 · 3 obs
● 2026-04-07 22:09:04
● 2026-04-24 08:30:34
●MXmx2.mailchannels.net2026-04-07 → 2026-04-24 · 3 obs
● 2026-04-07 22:09:04
● 2026-04-24 08:30:34
●A2001:1568::122015-07-10 → 2026-04-24 · 2 obs
● 2026-04-24 08:30:34
●A2001:1568::142026-04-07 → 2026-04-24 · 3 obs
● 2026-04-07 22:09:04
● 2026-04-24 08:30:34
●A81.91.86.122015-07-10 → 2026-04-24 · 2 obs
● 2026-04-24 08:30:34
●A81.91.86.142026-04-07 → 2026-04-24 · 3 obs
● 2026-04-07 22:09:04
● 2026-04-24 08:30:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | d.ns.nic.cz, c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz | - |
| penicka.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: 710ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 81.91.86.12, 81.91.86.14 |
| AAAA | 2 | 2001:1568::12, 2001:1568::14 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 2 | mx1.mailchannels.net (pri: 10), mx2.mailchannels.net (pri: 10) |
| TXT | 1 | v=spf1 a:rs31.web4u.cz a:www-relay.web4u |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
IP Addresses
penicka.cz points to four IP numbers: 2001:1568::12, 2001:1568::14, 81.91.86.12 and 81.91.86.14.
Other host names, for instance minimaxi.sk, mail.atso.cz, ubytovanivchorvatsku.info, mukarov.eu and mail.nrw.betgate.com share IP numbers with penicka.cz.
Name Servers
penicka.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
penicka.cz uses the same name server setup as other domains, for instance betaz.cz, milujuhovezi.cz, spiritofriver.com, najada.cz and m-group.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
penicka.cz is handled by two mail servers: mx1.mailchannels.net and mx2.mailchannels.net.
penicka.cz shares the same mail server setup as other domains, including roadrunnerbmw.org, flowerandfig.com, kirke.com.ar, foxwear.net and aleutek.com.
penicka.cz shares some mail servers with other domains, for example jarfallaforsamling.se, workplacesolutions.international, oestlings.se and ridlager.se.
Host names with one IP number:
mx1.mailchannels.net points to: 54.187.177.89.
mx2.mailchannels.net points to: 54.69.1.140.