integer.cz - dns.ninja

integer.cz

DNSSEC⚠️ Not signed
A2001:1528:240::1f🇨🇿 CASABLANCA-AS2001:1528::/32 Casablanca INT v6 network
PTRneuron.blueboard.cz
A217.11.249.141🇨🇿 CASABLANCA-AS217.11.248.0/23 Casablanca INT
NSshinzon.blueboard.cz ⭐
A2a00:1ed0:45::b🇨🇿 VSHOSTING2a00:1ed0::/32
PTRshinzon.blueboard.cz
A178.251.187.7🇨🇿 VSHOSTING178.251.184.0/21
PTRshinzon.blueboard.cz
NSjaguar.blueboard.cz ⚠️ Not in zone NS records
A2a00:1ed0:45::c🇨🇿 VSHOSTING2a00:1ed0::/32
PTRjaguar.blueboard.cz
A178.251.187.8🇨🇿 VSHOSTING178.251.184.0/21
PTRjaguar.blueboard.cz
NSns2.blueboard.cz
A2a01:4f8:13b:8d4::2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
A195.201.57.122🇩🇪 Hetzner195.201.0.0/16 HETZNER-DC
PTRns2.blueboard.cz
MXjaguar.blueboard.cz ⭐
A2a00:1ed0:45::c🇨🇿 VSHOSTING2a00:1ed0::/32
PTRjaguar.blueboard.cz
A178.251.187.8🇨🇿 VSHOSTING178.251.184.0/21
PTRjaguar.blueboard.cz
TXTv=spf1 a mx include:spf.blueboard.cz -all
SOAshinzon.blueboard.czhostmaster@blueboard.cz 2016-07-14 #45

cz

DNSSEC🔒 Signed (DS record present)
NSa.ns.nic.cz ⭐
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz
SOAa.ns.nic.czhostmaster@nic.cz serial=1780924636

Same first word

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DNS History

7 records (6 active, 1 former)

201820192020202120222023202420252026NSjaguar.blueboard.czns2.blueboard.czshinzon.blueboard.czMXjaguar.blueboard.czns2.blueboard.czA2001:1528:240::1f217.11.249.141
●NSjaguar.blueboard.cz2026-03-03 → 2026-06-08 · 3 obs
○ 2017-01-10 01:40:22
● 2026-03-03 03:13:48
● 2026-06-08 14:02:14
●NSns2.blueboard.cz2017-01-10 → 2026-06-08 · 2 obs
● 2017-01-10 01:40:22
● 2026-06-08 14:02:14
●NSshinzon.blueboard.cz2017-01-10 → 2026-06-08 · 2 obs
● 2017-01-10 01:40:22
● 2026-06-08 14:02:14
●MXjaguar.blueboard.cz2017-01-10 → 2026-06-08 · 2 obs
● 2017-01-10 01:40:22
● 2026-06-08 14:02:14
○MXns2.blueboard.cz2017-01-10 → 2020-02-18 · 4 obs
● 2017-01-10 01:40:22
● 2020-02-18 08:44:16
○ 2026-03-03 03:13:48
○ 2026-06-08 14:02:14
●A2001:1528:240::1f2017-01-10 → 2026-06-08 · 2 obs
● 2017-01-10 01:40:22
● 2026-06-08 14:02:14
●A217.11.249.1412017-01-10 → 2026-06-08 · 2 obs
● 2017-01-10 01:40:22
● 2026-06-08 14:02:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
integer.czns2.blueboard.cz, jaguar.blueboard.cz, shinzon.blueboard.cz3 records

✅ Authoritative Response

Server:178.251.187.8

NS records: ns2.blueboard.cz, jaguar.blueboard.cz, shinzon.blueboard.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for integer.cz (unsigned zone)

⏱️ Timing

Total: 1169ms | Queries: -

📄 Records

TypeCountSample Data
A1217.11.249.141
AAAA12001:1528:240::1f
NS2shinzon.blueboard.cz, ns2.blueboard.cz
MX1jaguar.blueboard.cz (pri: 10)
TXT1v=spf1 a mx include:spf.blueboard.cz -al
SOA1shinzon.blueboard.cz hostmaster.blueboar

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns2.blueboard.cz, jaguar.blueboard.cz, shinzon.blueboard.cz)

Analysis

IP Addresses

integer.cz points to two IP numbers: 217.11.249.141 and 2001:1528:240::1f.

Two other host names, along with sempa.cz, obuvkunes.com and zda.cz, also share IP numbers with integer.cz.

Name Servers

integer.cz has three name servers — jaguar.blueboard.cz, ns2.blueboard.cz and shinzon.blueboard.cz.

integer.cz shares at least some of its name servers with other domains, including valdes.cz, agj.cz, palenice.eu and two others.

These name servers are frequently seen alongside the name servers ns2.miniserver.cz.

Each of jaguar.blueboard.cz, ns2.blueboard.cz and shinzon.blueboard.cz points to two IP numbers. jaguar.blueboard.cz points to 178.251.187.8 and 2a00:1ed0:45::c. ns2.blueboard.cz points to 195.201.57.122 and 2a01:4f8:13b:8d4::2. shinzon.blueboard.cz points to 178.251.187.7 and 2a00:1ed0:45::b.

Mail Servers

The sole mail server for integer.cz is jaguar.blueboard.cz.

Among the domains sharing a mail server setup with integer.cz are vyfotim.cz, magazinokrase.cz, freespace.cz and two others.

There is at least a partial MX overlap between integer.cz and other domains, including technik-building.cz, yacco.cz, klimacentrum.cz and two others.