bitecode.cz - robtex.com
bitecode.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2001:1568::14🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | php7.web4u.cz | ||||||
| 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 | 54.69.1.140🇺🇸 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 | 54.187.177.89🇺🇸 Amazon54.186.0.0/15 EC2 PDX prefix | ||||||
| PTR | ec2-54-187-177-89.us-west-2.compute.amazonaws.com | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2026-05-07 #2 | ||||||
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=1790549246 | ||||||
Same first word
Similar names
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●MXmx1.mailchannels.net2026-09-27 → 2026-09-27 · 2 obs
● 2026-09-27 23:29:56
●MXmx2.mailchannels.net2026-09-27 → 2026-09-27 · 2 obs
● 2026-09-27 23:29:56
●A2001:1568::142026-09-27 → 2026-09-27 · 2 obs
● 2026-09-27 23:29:56
●A81.91.86.142026-09-27 → 2026-09-27 · 2 obs
● 2026-09-27 23:29:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| bitecode.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: 1201ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.14 |
| AAAA | 1 | 2001:1568::14 |
| 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, ns2.web4u.cz, ns.web4u.cz...)
Analysis
IP Addresses
bitecode.cz has two IP addresses: 81.91.86.14 and 2001:1568::14
Two other host names, along with radiodetection.cz, q08.eu and greenparkkm.eu, also share IP numbers with bitecode.cz.
Name Servers
bitecode.cz has two authoritative name servers — ns2.web4u.cz and ns.web4u.cz.
bitecode.cz shares its NS records with other domains, for example dragon-jh.cz, pribylspol.cz, hyscent.it and two others.
Both ns2.web4u.cz and ns.web4u.cz have two IP addresses each. ns2.web4u.cz resolves to 85.207.53.12 and 2a02:a40:100:28ff::12; ns.web4u.cz resolves to 185.14.224.241 and 2001:1568:fd::241.
Mail Servers
bitecode.cz is served by two mail servers, mx1.mailchannels.net and mx2.mailchannels.net.
Among the domains sharing a mail server setup with bitecode.cz are oella.us, themilkmaidllc.com, bryk.com and two others.
Some mail servers of bitecode.cz are also used by other domains, notably (0x6469636b)turpin.se and rpghrani.cz.
mx1.mailchannels.net → 54.69.1.140 and mx2.mailchannels.net → 54.187.177.89: one IP number per host name.