nmf.cz - dns.ninja

nmf.cz

DNSSEC🔒 Signed (DS record present)
A2001:1568::14🇨🇿 WEB4U2001:1568::/33
PTRphp7.web4u.cz
A81.91.86.14🇨🇿 WEB4U81.91.80.0/21
NSns2.web4u.cz ⭐
A2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.
PTRns2.web4u.cz
A85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block
PTRns2.web4u.cz
NSns.web4u.cz
A2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33
PTRns.web4u.cz
A185.14.224.241🇨🇿 WEB4U185.14.224.0/23
PTRns.web4u.cz
MXmx.web4u.cz ⭐
A2001:1568::7012🇨🇿 WEB4U2001:1568::/33
PTRmx.web4u.cz
A81.91.87.12🇨🇿 WEB4U81.91.80.0/21
PTRmx.web4u.cz
SOAns.web4u.czadmin@web4u.cz 2022-01-20 #1

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=1785986241
WOT: SAFE (69/100)

Same first word

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mnf.com.ve
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mfn.be
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nfm.fr
nfm.us

DNS History

16 records (5 active, 11 former)

20162017201820192020202120222023202420252026NSns.web4u.czns2.web4u.czns.gransy.comns1.ignum.comns2.gransy.comns2.ignum.czns3.gransy.comns4.gransy.comns5.gransy.comMXmx.web4u.czemail.ignum.czemail2.ignum.czA2001:1568::1481.91.86.1462.109.151.4881.0.214.197
○NSns.gransy.com2015-08-06 → 2016-08-13 · 7 obs
● 2015-08-06 17:31:04
● 2015-12-28 12:31:48
○ 2016-01-23 17:37:02
● 2016-02-10 07:48:06
● 2016-08-13 20:28:20
○ 2020-12-08 12:45:40
○ 2026-08-06 03:38:02
●NSns.web4u.cz2026-02-15 → 2026-08-06 · 3 obs
○ 2021-01-26 05:24:02
● 2026-02-15 17:29:56
● 2026-08-06 03:38:02
○NSns1.ignum.com2020-12-08 → 2021-01-26 · 5 obs
○ 2016-08-13 20:28:20
● 2020-12-08 12:45:40
● 2021-01-26 05:24:02
○ 2026-02-15 17:29:56
○ 2026-08-06 03:38:02
○NSns2.gransy.com2015-08-06 → 2016-08-13 · 7 obs
● 2015-08-06 17:31:04
● 2015-12-28 12:31:48
○ 2016-01-23 17:37:02
● 2016-02-10 07:48:06
● 2016-08-13 20:28:20
○ 2020-12-08 12:45:40
○ 2026-08-06 03:38:02
○NSns2.ignum.cz2020-12-08 → 2021-01-26 · 5 obs
○ 2016-08-13 20:28:20
● 2020-12-08 12:45:40
● 2021-01-26 05:24:02
○ 2026-02-15 17:29:56
○ 2026-08-06 03:38:02
●NSns2.web4u.cz2026-02-15 → 2026-08-06 · 3 obs
○ 2021-01-26 05:24:02
● 2026-02-15 17:29:56
● 2026-08-06 03:38:02
○NSns3.gransy.com2015-08-06 → 2016-08-13 · 7 obs
● 2015-08-06 17:31:04
● 2015-12-28 12:31:48
○ 2016-01-23 17:37:02
● 2016-02-10 07:48:06
● 2016-08-13 20:28:20
○ 2020-12-08 12:45:40
○ 2026-08-06 03:38:02
○NSns4.gransy.com2015-08-06 → 2016-08-13 · 7 obs
● 2015-08-06 17:31:04
● 2015-12-28 12:31:48
○ 2016-01-23 17:37:02
● 2016-02-10 07:48:06
● 2016-08-13 20:28:20
○ 2020-12-08 12:45:40
○ 2026-08-06 03:38:02
○NSns5.gransy.com2015-08-06 → 2016-08-13 · 7 obs
● 2015-08-06 17:31:04
● 2015-12-28 12:31:48
○ 2016-01-23 17:37:02
● 2016-02-10 07:48:06
● 2016-08-13 20:28:20
○ 2020-12-08 12:45:40
○ 2026-08-06 03:38:02
○MXemail.ignum.cz2020-12-08 → 2021-01-26 · 4 obs
● 2020-12-08 12:45:40
● 2021-01-26 05:24:02
○ 2026-02-15 17:29:56
○ 2026-08-06 03:38:02
○MXemail2.ignum.cz2020-12-08 → 2021-01-26 · 4 obs
● 2020-12-08 12:45:40
● 2021-01-26 05:24:02
○ 2026-02-15 17:29:56
○ 2026-08-06 03:38:02
●MXmx.web4u.cz2026-02-15 → 2026-08-06 · 3 obs
○ 2021-01-26 05:24:02
● 2026-02-15 17:29:56
● 2026-08-06 03:38:02
●A2001:1568::142026-02-15 → 2026-08-06 · 3 obs
○ 2021-01-26 05:24:02
● 2026-02-15 17:29:56
● 2026-08-06 03:38:02
○A62.109.151.482020-12-08 → 2021-01-26 · 5 obs
○ 2016-08-13 20:28:20
● 2020-12-08 12:45:40
● 2021-01-26 05:24:02
○ 2026-02-15 17:29:56
○ 2026-08-06 03:38:02
○A81.0.214.1972015-08-06 → 2016-08-13 · 7 obs
● 2015-08-06 17:31:04
● 2015-12-28 12:31:48
○ 2016-01-23 17:37:02
● 2016-02-10 07:48:06
● 2016-08-13 20:28:20
○ 2020-12-08 12:45:40
○ 2026-08-06 03:38:02
●A81.91.86.142026-02-15 → 2026-08-06 · 3 obs
○ 2021-01-26 05:24:02
● 2026-02-15 17:29:56
● 2026-08-06 03:38:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz8 records
nmf.czns.web4u.cz, ns2.web4u.cz4 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: 930ms | Queries: -

📄 Records

TypeCountSample Data
A181.91.86.14
AAAA12001:1568::14
NS2ns.web4u.cz, ns2.web4u.cz
MX1mx.web4u.cz (pri: 10)
SOA1ns.web4u.cz admin.web4u.cz

📌 Glue Records Collected

Total: 12

In-bailiwick: 8 (a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz...)

Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)

Analysis

IP Addresses

nmf.cz directs to two IP numbers, 81.91.86.14 and 2001:1568::14

Two other host names, along with diametral.sk, x-drinks.com and variotec.cz, also share IP numbers with nmf.cz.

Name Servers

The NS records for nmf.cz delegate to ns2.web4u.cz and ns.web4u.cz.

nmf.cz shares its NS records with other domains, for example cblightning.cz, kontiky.cz, polzer.cz and two others.

ns2.web4u.cz resolves to 85.207.53.12 and 2a02:a40:100:28ff::12. Likewise, ns.web4u.cz resolves to 185.14.224.241 and 2001:1568:fd::241 — two IP addresses apiece.

Mail Servers

The sole mail server for nmf.cz is mx.web4u.cz.

Among the domains sharing a mail server setup with nmf.cz are zasilkovnapoint.cz, e-procurement.cz, jarda.pl and two others.

nmf.cz shares at least some of its mail servers with other domains, such as st-automation.cz.

mx.web4u.cz points to two IP addresses: 81.91.87.12 and 2001:1568::7012.