krontec.eu - robtex.com
krontec.eu
| 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 | 54.69.1.140🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix | ||||||
| PTR | ec2-54-69-1-140.us-west-2.compute.amazonaws.com | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2026-03-02 #2 | ||||||
eu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | si.dns.eu ⭐ | ||||||
| NS | be.dns.eu | ||||||
| NS | w.dns.eu | ||||||
| NS | x.dns.eu | ||||||
| NS | y.dns.eu | ||||||
| SOA | si.dns.eutech@eurid.eu serial=1124096585 | ||||||
Subdomains
mail.krontec.eu |
Same first word
Similar names
DNS History
8 records (6 active, 2 former)
●NSns.web4u.cz2015-06-11 → 2026-05-11 · 6 obs
● 2015-12-25 14:19:52
○ 2016-04-03 09:16:26
○ 2017-06-25 17:46:32
● 2026-05-08 06:35:24
● 2026-05-11 03:17:10
●NSns2.web4u.cz2015-06-11 → 2026-05-11 · 6 obs
● 2015-12-25 14:19:52
○ 2016-04-03 09:16:26
○ 2017-06-25 17:46:32
● 2026-05-08 06:35:24
● 2026-05-11 03:17:10
○MXmail.krontec.eu2015-06-11 → 2015-12-25 · 4 obs
● 2015-12-25 14:19:52
○ 2016-04-03 09:16:26
○ 2026-05-11 03:17:10
●MXmx1.mailchannels.net2026-05-08 → 2026-05-11 · 3 obs
● 2026-05-08 06:35:24
● 2026-05-11 03:17:10
●MXmx2.mailchannels.net2026-05-08 → 2026-05-11 · 3 obs
● 2026-05-08 06:35:24
● 2026-05-11 03:17:10
●A2001:1568::142026-05-08 → 2026-05-11 · 3 obs
● 2026-05-08 06:35:24
● 2026-05-11 03:17:10
○A81.91.86.122015-06-11 → 2015-12-25 · 4 obs
● 2015-12-25 14:19:52
○ 2016-04-03 09:16:26
○ 2026-05-11 03:17:10
●A81.91.86.142026-05-08 → 2026-05-11 · 3 obs
● 2026-05-08 06:35:24
● 2026-05-11 03:17:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| eu | w.dns.eu, x.dns.eu, y.dns.eu, be.dns.eu... | - |
| krontec.eu | ns2.web4u.cz, ns.web4u.cz | - |
✅ Authoritative Response
Server:85.207.53.12
NS records: ns2.web4u.cz, ns.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1490ms | 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 |
Analysis
Hierarchy
The parent of mail.krontec.eu is krontec.eu.
IP Addresses
Two IP numbers are pointed to by krontec.eu: 2001:1568::14 and 81.91.86.14.
other host names include common-systems.com, mail.ratata.cz, mail.rektalnirourka.cz, bochnak.eu and reprobus.cz; they share IP numbers with krontec.eu.
Name Servers
Two name servers ns2.web4u.cz and ns.web4u.cz handle the delegation for krontec.eu.
krontec.eu shares the same name server setup as other domains, for instance zarubova.cz, ideasdesign.cz, sovice.net, smpgroup.cz and bannerama.cz.
Host names with two IP numbers:
ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12.
ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
krontec.eu is handled by two mail servers: mx1.mailchannels.net and mx2.mailchannels.net.
krontec.eu uses the same mail server setup as other domains, for instance bofix.cz, dicosta.it, pedoe.com, jayneyer.com and brigittaspromise.org.
krontec.eu shares at least some mail servers with other domains, for instance webbmed.org.
Host names with a single IP
mx1.mailchannels.net points to 54.69.1.140
mx2.mailchannels.net points to 54.69.1.140
Host names that point to 54.69.1.140: mx1.mailchannels.net and mx2.mailchannels.net