dso.cz - robtex.com

dso.cz

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:8de0🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:597a🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.89.122Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.141.224🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSguy.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3bad🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguy.ns.cloudflare.com
A2803:f800:50::6ca2:c1ad🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRguy.ns.cloudflare.com
A2a06:98c1:50::ac40:21ad🇺🇸 Cloudflare2a06:98c1:50::/45
PTRguy.ns.cloudflare.com
A108.162.193.173🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguy.ns.cloudflare.com
A172.64.33.173🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguy.ns.cloudflare.com
A173.245.59.173🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguy.ns.cloudflare.com
NSursula.ns.cloudflare.com
A2606:4700:50::a29f:26bf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRursula.ns.cloudflare.com
A2803:f800:50::6ca2:c2bf🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRursula.ns.cloudflare.com
A2a06:98c1:50::ac40:22bf🇺🇸 Cloudflare2a06:98c1:50::/45
PTRursula.ns.cloudflare.com
A108.162.194.191🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRursula.ns.cloudflare.com
A162.159.38.191Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRursula.ns.cloudflare.com
A172.64.34.191🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRursula.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.89.122, 172.67.141.224
IPv6 hints2606:4700:3030::ac43:8de0, 2606:4700:3036::6815:597a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=9, name=cloudflare-ech.com
SOAguy.ns.cloudflare.comdns@cloudflare.com serial=2398541440

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=1776016042

Subdomains

mailin1.dso.cz

Same first word

dso.asn.au
dso.co.za
dso.in
dso.com.ua
dso.nu
dso.it
dso.pt
dso.ae
dso.hr
dso.com.tw
dso.no
dso.ca
dso.de
dso.us
dso.at
dso.pl
dso.ch
dso.co.uk
dso.ie
dso.org.sg
dso.info
dso.com.es
dso.ai
dso.cc
dso.co
dso.cz
dso.me
dso.cl
dso.ru
dso.org.tr
dso.co.nz
dso.or.jp
dso.mil
dso.co.in
dso.gov.ua
dso.wiki
dso.nl
dso.com
dso.es
dso.gg
dso.org
dso.se

Similar names

sdo.it
dos.design
sod.ws
ods.es
ods.trafficmanager.net
sod.me
ods.me
ods.consulting
sod.sk
ods.inc
sod.hu
osd.us
dos.ca
ods.com.mx
dos.am
ods.app
dos.pl
dos.sk
dos.cz
ods.mobi
osd.agency
dos.co
dos.vg
osd.blob.core.windows.net
sdo.network
ods.pt
osd.no
sdo.by
sod.com
dos.ch
ods.cz
dos.works
osd.nl
ods.se
sod.dk
osd.im
sdo.ru
dos.agency
ods.ninja
ods.ie
sod.be
ods.lu
sdo.pl
dos.com.ec
osd.com.au
dos.ie
osd.com
dos.info
osd.at
ods.com.au
ods.gov.sa
dos.lol
sod.ch
ods.by
sod.info
sod.ca
sdo.academy
ods.dk
dos.zone
dos.com
ods.mx
ods.us
dos.nl
sdo.org.tr
ods.cc
dos.cl
dos.gov.jo
sdo.dk
sdo.dz
sdo.gov.kw
dos.ovh
sod.us
dos.ac
sod.org
sdo.su
sdo.kz
osd.co.th
sod.at
sod.no
sdo.cz
dos.de
dos.kz
dos.cc
osd.com.br
sdo.co.id
sod.nu
ods.io
ods.com.tr
sod.jp
sdo.org.do
ods.de
dos.fi
sod.com.hk
ods.be
sod.ae
osd.mil
dos.rs
ods.ro
sdo.cn.com
ods.live

DNS History

19 records (6 active, 13 former)

20162017201820192020202120222023202420252026NSguy.ns.cloudflare.comursula.ns.cloudflare.comns1.relaxhosting.czns1.websupport.skns2.relaxhosting.czns2.websupport.skns3.websupport.skMXmail1.relaxhosting.czmailin1.dso.czmailin2.dso.czmailinbackup1.dso.czA104.21.89.122172.67.141.2242606:4700:3030::ac43:8de02606:4700:3036::6815:597a212.4.138.132a06:98c1:3120::2a06:98c1:3121::37.9.175.3
●NSguy.ns.cloudflare.com2026-03-27 → 2026-04-12 · 3 obs
○ 2021-07-31 05:43:24
● 2026-03-27 13:51:18
● 2026-04-12 18:43:32
○NSns1.relaxhosting.cz2018-12-28 → 2021-07-31 · 5 obs
○ 2017-05-27 14:24:42
● 2018-12-28 02:07:14
● 2021-07-31 05:43:24
○ 2026-03-27 13:51:18
○ 2026-04-12 18:43:32
○NSns1.websupport.sk2015-08-24 → 2017-05-27 · 4 obs
● 2015-08-24 18:03:24
● 2017-05-27 14:24:42
○ 2018-12-28 02:07:14
○ 2026-04-12 18:43:32
○NSns2.relaxhosting.cz2018-12-28 → 2021-07-31 · 5 obs
○ 2017-05-27 14:24:42
● 2018-12-28 02:07:14
● 2021-07-31 05:43:24
○ 2026-03-27 13:51:18
○ 2026-04-12 18:43:32
○NSns2.websupport.sk2015-08-24 → 2017-05-27 · 4 obs
● 2015-08-24 18:03:24
● 2017-05-27 14:24:42
○ 2018-12-28 02:07:14
○ 2026-04-12 18:43:32
○NSns3.websupport.sk2015-08-24 → 2017-05-27 · 4 obs
● 2015-08-24 18:03:24
● 2017-05-27 14:24:42
○ 2018-12-28 02:07:14
○ 2026-04-12 18:43:32
●NSursula.ns.cloudflare.com2026-03-27 → 2026-04-12 · 3 obs
○ 2021-07-31 05:43:24
● 2026-03-27 13:51:18
● 2026-04-12 18:43:32
○MXmail1.relaxhosting.cz2018-12-28 → 2021-07-31 · 5 obs
○ 2017-05-27 14:24:42
● 2018-12-28 02:07:14
● 2021-07-31 05:43:24
○ 2026-03-27 13:51:18
○ 2026-04-12 18:43:32
○MXmailin1.dso.cz2015-08-24 → 2017-05-27 · 4 obs
● 2015-08-24 18:03:24
● 2017-05-27 14:24:42
○ 2018-12-28 02:07:14
○ 2026-04-12 18:43:32
○MXmailin2.dso.cz2015-08-24 → 2017-05-27 · 4 obs
● 2015-08-24 18:03:24
● 2017-05-27 14:24:42
○ 2018-12-28 02:07:14
○ 2026-04-12 18:43:32
○MXmailinbackup1.dso.cz2015-08-24 → 2016-04-14 · 4 obs
● 2015-08-24 18:03:24
● 2016-04-14 11:23:34
○ 2016-05-26 23:45:48
○ 2026-04-12 18:43:32
●A104.21.89.1222026-03-27 → 2026-04-12 · 3 obs
○ 2021-07-31 05:43:24
● 2026-03-27 13:51:18
● 2026-04-12 18:43:32
●A172.67.141.2242026-03-27 → 2026-04-12 · 3 obs
○ 2021-07-31 05:43:24
● 2026-03-27 13:51:18
● 2026-04-12 18:43:32
○A212.4.138.132018-12-28 → 2021-07-31 · 5 obs
○ 2017-05-27 14:24:42
● 2018-12-28 02:07:14
● 2021-07-31 05:43:24
○ 2026-03-27 13:51:18
○ 2026-04-12 18:43:32
●A2606:4700:3030::ac43:8de02026-03-27 → 2026-04-12 · 6 obs
○ 2021-07-31 05:43:24
● 2026-03-27 13:51:18
● 2026-04-04 05:58:26
○ 2026-04-04 06:49:38
● 2026-04-07 11:28:36
● 2026-04-12 18:43:32
●A2606:4700:3036::6815:597a2026-03-27 → 2026-04-12 · 6 obs
○ 2021-07-31 05:43:24
● 2026-03-27 13:51:18
● 2026-04-04 05:58:26
○ 2026-04-04 06:49:38
● 2026-04-07 11:28:36
● 2026-04-12 18:43:32
○A2a06:98c1:3120::2026-04-04 → 2026-04-04 · 4 obs
○ 2026-04-04 05:58:26
● 2026-04-04 06:49:38
○ 2026-04-07 11:28:36
○ 2026-04-12 18:43:32
○A2a06:98c1:3121::2026-04-04 → 2026-04-04 · 4 obs
○ 2026-04-04 05:58:26
● 2026-04-04 06:49:38
○ 2026-04-07 11:28:36
○ 2026-04-12 18:43:32
○A37.9.175.32015-08-24 → 2017-05-27 · 4 obs
● 2015-08-24 18:03:24
● 2017-05-27 14:24:42
○ 2018-12-28 02:07:14
○ 2026-04-12 18:43:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
dso.czguy.ns.cloudflare.com, ursula.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.173

NS records: guy.ns.cloudflare.com, ursula.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dso.cz (unsigned zone)

⏱️ Timing

Total: 847ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.89.122, 172.67.141.224
AAAA22606:4700:3030::ac43:8de0, 2606:4700:3036::6815:597a
NS2guy.ns.cloudflare.com, ursula.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1guy.ns.cloudflare.com dns.cloudflare.com

Analysis

Hierarchy

The parent of mailin1.dso.cz is dso.cz.

IP Addresses

dso.cz resolves to four IP numbers: 2606:4700:3030::ac43:8de0, 2606:4700:3036::6815:597a, 104.21.89.122 and 172.67.141.224.

Other host names such as irvingq.com, www.lolbar.net, bgzq.com.cn, dealsfamousoysterhouse.com and cargotrans.md share IPs with dso.cz.

Name Servers

dso.cz is delegated to two name servers: guy.ns.cloudflare.com and ursula.ns.cloudflare.com.

dso.cz shares the same name server setup as jablicka.cz, auction.cz, beats.cz, pump.cz and ull.cz.

dso.cz at least partially shares name servers with other domains, for instance cleannotes.us, blitz-mods.com, lightueyvp.com, poloka.com and helikon.com.ua.

These name servers are commonly used with randy.ns.cloudflare.com and liz.ns.cloudflare.com.

Host names with six IP numbers:

guy.ns.cloudflare.com points to 2606:4700:58::adf5:3bad, 2803:f800:50::6ca2:c1ad, 2a06:98c1:50::ac40:21ad, 108.162.193.173, 172.64.33.173 and 173.245.59.173.

ursula.ns.cloudflare.com points to 2606:4700:50::a29f:26bf, 2803:f800:50::6ca2:c2bf, 2a06:98c1:50::ac40:22bf, 108.162.194.191, 162.159.38.191 and 172.64.34.191.