dumtechniky.cz - robtex.com

dumtechniky.cz

DNSSEC⚠️ Not signed
A2606:4700:3037::6815:3f56🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9057🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.63.86Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.144.87🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSaiden.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b37🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaiden.ns.cloudflare.com
A2803:f800:50::6ca2:c137🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRaiden.ns.cloudflare.com
A2a06:98c1:50::ac40:2137🇺🇸 Cloudflare2a06:98c1:50::/45
PTRaiden.ns.cloudflare.com
A108.162.193.55🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaiden.ns.cloudflare.com
A172.64.33.55🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaiden.ns.cloudflare.com
A173.245.59.55🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaiden.ns.cloudflare.com
NSpola.ns.cloudflare.com
A2606:4700:50::adf5:3ad6🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpola.ns.cloudflare.com
A2803:f800:50::6ca2:c0d6🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRpola.ns.cloudflare.com
A2a06:98c1:50::ac40:20d6🇺🇸 Cloudflare2a06:98c1:50::/45
PTRpola.ns.cloudflare.com
A108.162.192.214🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpola.ns.cloudflare.com
A172.64.32.214🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpola.ns.cloudflare.com
A173.245.58.214🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpola.ns.cloudflare.com
MX146e094ec9d6953f.mx1.mojedomena.seznam.cz ⭐
A2a02:598:2::1056🇨🇿 SEZNAM-CZ2a02:598:2::/48
PTRwildcard.mx1.emailprofi.seznam.cz
A77.75.77.56🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III
PTRwildcard.mx1.emailprofi.seznam.cz
MX146e094ec9d6953f.mx2.mojedomena.seznam.cz ⭐
A2a02:598:2::1146🇨🇿 SEZNAM-CZ2a02:598:2::/48
PTRwildcard.mx2.emailprofi.seznam.cz
A77.75.77.146🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III
PTRwildcard.mx2.emailprofi.seznam.cz
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.63.86, 172.67.144.87
IPv6 hints2606:4700:3037::6815:3f56, 2606:4700:3037::ac43:9057
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=14, name=cloudflare-ech.com
SOAaiden.ns.cloudflare.comdns@cloudflare.com serial=2406393072

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=1785432195

Same first word

dumtechniky.cz

DNS History

14 records (8 active, 6 former)

20192020202120222023202420252026NSaiden.ns.cloudflare.compola.ns.cloudflare.comMX146e094ec9d6953f.mx1.mojedomena.seznam.cz146e094ec9d6953f.mx2.mojedomena.seznam.czA104.21.63.86172.67.144.872606:4700:3037::6815:3f562606:4700:3037::ac43:9057104.27.132.96104.27.133.962400:cb00:2048:1::681b:84602400:cb00:2048:1::681b:85602606:4700:3030::ac43:90572606:4700:3035::6815:3f56
●NSaiden.ns.cloudflare.com2018-09-17 → 2026-07-30 · 2 obs
● 2018-09-17 02:11:00
● 2026-07-30 17:43:22
●NSpola.ns.cloudflare.com2018-09-17 → 2026-07-30 · 2 obs
● 2018-09-17 02:11:00
● 2026-07-30 17:43:22
●MX146e094ec9d6953f.mx1.mojedomena.seznam.cz2018-09-17 → 2026-07-30 · 2 obs
● 2018-09-17 02:11:00
● 2026-07-30 17:43:22
●MX146e094ec9d6953f.mx2.mojedomena.seznam.cz2018-09-17 → 2026-07-30 · 2 obs
● 2018-09-17 02:11:00
● 2026-07-30 17:43:22
●A104.21.63.862026-06-10 → 2026-07-30 · 3 obs
○ 2018-09-17 02:11:00
● 2026-06-10 17:33:00
● 2026-07-30 17:43:22
○A104.27.132.962018-09-17 → 2018-09-17 · 3 obs
● 2018-09-17 02:11:00
○ 2026-06-10 17:33:00
○ 2026-07-30 17:43:22
○A104.27.133.962018-09-17 → 2018-09-17 · 3 obs
● 2018-09-17 02:11:00
○ 2026-06-10 17:33:00
○ 2026-07-30 17:43:22
●A172.67.144.872026-06-10 → 2026-07-30 · 3 obs
○ 2018-09-17 02:11:00
● 2026-06-10 17:33:00
● 2026-07-30 17:43:22
○A2400:cb00:2048:1::681b:84602018-09-17 → 2018-09-17 · 3 obs
● 2018-09-17 02:11:00
○ 2026-06-10 17:33:00
○ 2026-07-30 17:43:22
○A2400:cb00:2048:1::681b:85602018-09-17 → 2018-09-17 · 3 obs
● 2018-09-17 02:11:00
○ 2026-06-10 17:33:00
○ 2026-07-30 17:43:22
○A2606:4700:3030::ac43:90572026-06-10 → 2026-06-10 · 4 obs
○ 2018-09-17 02:11:00
● 2026-06-10 17:33:00
○ 2026-07-04 04:38:26
○ 2026-07-30 17:43:22
○A2606:4700:3035::6815:3f562026-06-10 → 2026-06-10 · 4 obs
○ 2018-09-17 02:11:00
● 2026-06-10 17:33:00
○ 2026-07-04 04:38:26
○ 2026-07-30 17:43:22
●A2606:4700:3037::6815:3f562026-07-04 → 2026-07-30 · 3 obs
○ 2026-06-10 17:33:00
● 2026-07-04 04:38:26
● 2026-07-30 17:43:22
●A2606:4700:3037::ac43:90572026-07-04 → 2026-07-30 · 3 obs
○ 2026-06-10 17:33:00
● 2026-07-04 04:38:26
● 2026-07-30 17:43:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
dumtechniky.czpola.ns.cloudflare.com, aiden.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.214

NS records: pola.ns.cloudflare.com, aiden.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dumtechniky.cz (unsigned zone)

⏱️ Timing

Total: 820ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.144.87, 104.21.63.86
AAAA22606:4700:3037::ac43:9057, 2606:4700:3037::6815:3f56
NS2aiden.ns.cloudflare.com, pola.ns.cloudflare.com
MX2146e094ec9d6953f.mx1.mojedomena.seznam.c, 146e094ec9d6953f.mx2.mojedomena.seznam.c
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1aiden.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

dumtechniky.cz resolves to four IP addresses: 104.21.63.86, 172.67.144.87, 2606:4700:3037::6815:3f56 and 2606:4700:3037::ac43:9057.

Two other host names, along with noble2025solutions.pro, jiedns.com and iftuzvnyudfus.online, also share IP numbers with dumtechniky.cz.

Name Servers

Two name servers handle the delegation for dumtechniky.cz: aiden.ns.cloudflare.com and pola.ns.cloudflare.com.

dumtechniky.cz shares its NS records with other domains, for example vyberdarku.cz, recenzji.pl, bevedo.ro and two others.

dumtechniky.cz partially shares its NS delegation with several other domains, including casino7158.buzz, winner.rw, ciidri.com and two others.

These name servers are regularly seen alongside sierra.ns.cloudflare.com and zoe.ns.cloudflare.com as name servers.

DNS names with 6 IP addresses:

aiden.ns.cloudflare.com resolves to 108.162.193.55, 172.64.33.55 and 173.245.59.55 among others, with 3 other IP addresses in total.

pola.ns.cloudflare.com resolves to 108.162.192.214, 172.64.32.214 and 173.245.58.214 among others, with 3 other IP addresses in total.

Mail Servers

dumtechniky.cz is served by two mail servers, 146e094ec9d6953f.mx1.mojedomena.seznam.cz and 146e094ec9d6953f.mx2.mojedomena.seznam.cz.

146e094ec9d6953f.mx1.mojedomena.seznam.cz and 146e094ec9d6953f.mx2.mojedomena.seznam.cz both carry two IP addresses. The A records for 146e094ec9d6953f.mx1.mojedomena.seznam.cz are 77.75.77.56 and 2a02:598:2::1056; the A records for 146e094ec9d6953f.mx2.mojedomena.seznam.cz are 77.75.77.146 and 2a02:598:2::1146.