biscuit.cz - robtex.com
biscuit.cz
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=1785458841 | ||||||
Subdomains
Same first word
Similar names
citibus.gi |
citibus.fr |
citibus.info |
citibus.london |
biscuti.com |
icubist.com |
citibus.com |
citibus.co.uk |
citibus.com.tw |
biticus.com |
uicbits.net |
citibus.de |
citibus.net |
citibus.co.za |
DNS History
13 records (7 active, 6 former)
○NSalfa.ns.active24.cz2015-08-02 → 2017-09-10 · 4 obs
● 2017-09-10 18:08:22
○ 2026-06-23 10:03:02
○ 2026-07-31 01:11:46
○NSbeta.ns.active24.cz2015-08-02 → 2017-09-10 · 4 obs
● 2017-09-10 18:08:22
○ 2026-06-23 10:03:02
○ 2026-07-31 01:11:46
○NSgama.ns.active24.sk2015-08-02 → 2017-09-10 · 4 obs
● 2017-09-10 18:08:22
○ 2026-06-23 10:03:02
○ 2026-07-31 01:11:46
●NSns1.websupport.cz2026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
●NSns2.websupport.cz2026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
●NSns3.websupport.eu2026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
○MXbiscuit-cz.mail.protection.outlook.com2015-08-02 → 2017-09-10 · 4 obs
● 2017-09-10 18:08:22
○ 2026-06-23 10:03:02
○ 2026-07-31 01:11:46
●MXmailin1.biscuit.cz2026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
●MXmailin2.biscuit.cz2026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
●A2a00:4b40:aaaa:2011::72026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
●A37.9.175.2132026-06-23 → 2026-07-31 · 3 obs
● 2026-06-23 10:03:02
● 2026-07-31 01:11:46
○A89.187.143.1732015-08-02 → 2017-01-30 · 4 obs
● 2017-01-30 16:36:44
○ 2017-09-10 18:08:22
○ 2026-07-31 01:11:46
○A94.176.236.252017-09-10 → 2017-09-10 · 4 obs
● 2017-09-10 18:08:22
○ 2026-06-23 10:03:02
○ 2026-07-31 01:11:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| biscuit.cz | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.13
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1073ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.213 |
| AAAA | 1 | 2a00:4b40:aaaa:2011::7 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | mailin1.biscuit.cz (pri: 10), mailin2.biscuit.cz (pri: 100) |
| TXT | 1 | v=spf1 include:spf.active24.com include: |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
biscuit.cz is the parent domain of www.biscuit.cz, mailin2.biscuit.cz and mailin1.biscuit.cz.
IP Addresses
biscuit.cz directs to two IP numbers, 37.9.175.213 and 2a00:4b40:aaaa:2011::7
sanilife.cz, dr-reinhart.de, www.tai-ji.cz and two other host names share IP numbers with biscuit.cz.
Name Servers
DNS for biscuit.cz is handled by three authoritative name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
biscuit.cz shares at least some of its name servers with other domains, including mokri.cz, kovonastrojecz.sk, area4u.cz and two others.
These name servers are frequently paired with the name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
Three hostnames — ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu — each have two IP addresses: ns1.websupport.cz has 45.10.97.11 and 2a10:bbc0::11, ns2.websupport.cz has 185.71.159.12 and 2a02:250:3::12, and ns3.websupport.eu has 45.10.97.13 and 2a10:bbc0::13.
Mail Servers
Mail for biscuit.cz is handled by two mail servers — mailin1.biscuit.cz and mailin2.biscuit.cz.
mailin1.biscuit.cz directs to 45.13.137.104 and 2a00:4b40:aaaa:2101:45:13:137:9. mailin2.biscuit.cz directs to 45.13.137.9 and 2a00:4b40:aaaa:2101:45:13:137:114. Each host name carries two IP addresses.