flexibuild.cz - dns.ninja

flexibuild.cz

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:d925🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:3df2🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.61.242Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.217.37🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSarya.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a46🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarya.ns.cloudflare.com
A2803:f800:50::6ca2:c046🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRarya.ns.cloudflare.com
A2a06:98c1:50::ac40:2046🇺🇸 Cloudflare2a06:98c1:50::/45
PTRarya.ns.cloudflare.com
A108.162.192.70🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarya.ns.cloudflare.com
A172.64.32.70🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarya.ns.cloudflare.com
A173.245.58.70🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarya.ns.cloudflare.com
NSmorgan.ns.cloudflare.com
A2606:4700:58::a29f:2c84🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmorgan.ns.cloudflare.com
A2803:f800:50::6ca2:c384🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmorgan.ns.cloudflare.com
A2a06:98c1:50::ac40:2384🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmorgan.ns.cloudflare.com
A108.162.195.132🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmorgan.ns.cloudflare.com
A162.159.44.132Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmorgan.ns.cloudflare.com
A172.64.35.132🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmorgan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.61.242, 172.67.217.37
IPv6 hints2606:4700:3033::ac43:d925, 2606:4700:3034::6815:3df2
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=247, name=cloudflare-ech.com
SOAarya.ns.cloudflare.comdns@cloudflare.com serial=2406049510

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=1783360040

Same first word

flexibuild.cz

DNS History

18 records (6 active, 12 former)

20162017201820192020202120222023202420252026NSarya.ns.cloudflare.commorgan.ns.cloudflare.commail.cekit.czns.cekit.czns2.cekit.netMXmail2.cekit.netmx.cekit.czA104.21.61.242172.67.217.372606:4700:3033::ac43:d9252606:4700:3034::6815:3df2188.114.96.0188.114.97.02606:4700:3030::ac43:d9252606:4700:3035::6815:3df22a06:98c1:3120::2a06:98c1:3121::81.31.39.100
●NSarya.ns.cloudflare.com2026-04-03 → 2026-07-06 · 3 obs
○ 2020-01-30 16:43:44
● 2026-04-03 04:44:32
● 2026-07-06 17:59:08
○NSmail.cekit.cz2015-08-20 → 2020-01-30 · 4 obs
● 2015-08-20 03:19:18
● 2020-01-30 16:43:44
○ 2026-04-03 04:44:32
○ 2026-07-06 17:59:08
●NSmorgan.ns.cloudflare.com2026-04-03 → 2026-07-06 · 3 obs
○ 2020-01-30 16:43:44
● 2026-04-03 04:44:32
● 2026-07-06 17:59:08
○NSns.cekit.cz2015-08-20 → 2020-01-30 · 4 obs
● 2015-08-20 03:19:18
● 2020-01-30 16:43:44
○ 2026-04-03 04:44:32
○ 2026-07-06 17:59:08
○NSns2.cekit.net2015-08-20 → 2020-01-30 · 4 obs
● 2015-08-20 03:19:18
● 2020-01-30 16:43:44
○ 2026-04-03 04:44:32
○ 2026-07-06 17:59:08
○MXmail2.cekit.net2015-08-20 → 2020-01-30 · 4 obs
● 2015-08-20 03:19:18
● 2020-01-30 16:43:44
○ 2026-04-03 04:44:32
○ 2026-07-06 17:59:08
○MXmx.cekit.cz2015-08-20 → 2020-01-30 · 4 obs
● 2015-08-20 03:19:18
● 2020-01-30 16:43:44
○ 2026-04-03 04:44:32
○ 2026-07-06 17:59:08
●A104.21.61.2422026-04-03 → 2026-07-06 · 9 obs
○ 2020-01-30 16:43:44
● 2026-04-03 04:44:32
● 2026-04-07 20:27:42
○ 2026-04-09 03:18:34
● 2026-06-05 10:09:24
● 2026-06-10 03:19:24
○ 2026-06-18 03:15:52
● 2026-06-19 13:51:10
● 2026-07-06 17:59:08
●A172.67.217.372026-04-03 → 2026-07-06 · 9 obs
○ 2020-01-30 16:43:44
● 2026-04-03 04:44:32
● 2026-04-07 20:27:42
○ 2026-04-09 03:18:34
● 2026-06-05 10:09:24
● 2026-06-10 03:19:24
○ 2026-06-18 03:15:52
● 2026-06-19 13:51:10
● 2026-07-06 17:59:08
○A188.114.96.02026-04-09 → 2026-06-18 · 8 obs
○ 2026-04-03 04:44:32
○ 2026-04-07 20:27:42
● 2026-04-09 03:18:34
○ 2026-06-05 10:09:24
○ 2026-06-10 03:19:24
● 2026-06-18 03:15:52
○ 2026-06-19 13:51:10
○ 2026-07-06 17:59:08
○A188.114.97.02026-04-09 → 2026-06-18 · 8 obs
○ 2026-04-03 04:44:32
○ 2026-04-07 20:27:42
● 2026-04-09 03:18:34
○ 2026-06-05 10:09:24
○ 2026-06-10 03:19:24
● 2026-06-18 03:15:52
○ 2026-06-19 13:51:10
○ 2026-07-06 17:59:08
○A2606:4700:3030::ac43:d9252026-04-03 → 2026-06-19 · 10 obs
○ 2020-01-30 16:43:44
● 2026-04-03 04:44:32
● 2026-04-07 20:27:42
○ 2026-04-09 03:18:34
● 2026-06-05 10:09:24
● 2026-06-10 03:19:24
○ 2026-06-18 03:15:52
● 2026-06-19 13:51:10
○ 2026-07-06 17:59:06
○ 2026-07-06 17:59:08
●A2606:4700:3033::ac43:d9252026-07-06 → 2026-07-06 · 3 obs
○ 2026-06-19 13:51:10
● 2026-07-06 17:59:06
● 2026-07-06 17:59:08
●A2606:4700:3034::6815:3df22026-07-06 → 2026-07-06 · 3 obs
○ 2026-06-19 13:51:10
● 2026-07-06 17:59:06
● 2026-07-06 17:59:08
○A2606:4700:3035::6815:3df22026-04-03 → 2026-06-19 · 10 obs
○ 2020-01-30 16:43:44
● 2026-04-03 04:44:32
● 2026-04-07 20:27:42
○ 2026-04-09 03:18:34
● 2026-06-05 10:09:24
● 2026-06-10 03:19:24
○ 2026-06-18 03:15:52
● 2026-06-19 13:51:10
○ 2026-07-06 17:59:06
○ 2026-07-06 17:59:08
○A2a06:98c1:3120::2026-04-09 → 2026-06-18 · 8 obs
○ 2026-04-03 04:44:32
○ 2026-04-07 20:27:42
● 2026-04-09 03:18:34
○ 2026-06-05 10:09:24
○ 2026-06-10 03:19:24
● 2026-06-18 03:15:52
○ 2026-06-19 13:51:10
○ 2026-07-06 17:59:08
○A2a06:98c1:3121::2026-04-09 → 2026-06-18 · 8 obs
○ 2026-04-03 04:44:32
○ 2026-04-07 20:27:42
● 2026-04-09 03:18:34
○ 2026-06-05 10:09:24
○ 2026-06-10 03:19:24
● 2026-06-18 03:15:52
○ 2026-06-19 13:51:10
○ 2026-07-06 17:59:08
○A81.31.39.1002015-08-20 → 2020-01-30 · 4 obs
● 2015-08-20 03:19:18
● 2020-01-30 16:43:44
○ 2026-04-03 04:44:32
○ 2026-07-06 17:59:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
flexibuild.czarya.ns.cloudflare.com, morgan.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.70

NS records: arya.ns.cloudflare.com, morgan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flexibuild.cz (unsigned zone)

⏱️ Timing

Total: 1942ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.217.37, 104.21.61.242
AAAA22606:4700:3033::ac43:d925, 2606:4700:3034::6815:3df2
NS2arya.ns.cloudflare.com, morgan.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1arya.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

flexibuild.cz has four IP addresses: 104.21.61.242, 172.67.217.37, 2606:4700:3033::ac43:d925 and 2606:4700:3034::6815:3df2.

gesticondverona.it, lahair.net, soulwineseattle.com and two other host names share IP numbers with flexibuild.cz.

Name Servers

Two name servers handle the delegation for flexibuild.cz: arya.ns.cloudflare.com and morgan.ns.cloudflare.com.

flexibuild.cz uses the same name servers as several other domains — among them lit-akad.cz, spolupraceroku.cz, achb.cz and two more.

flexibuild.cz partially shares its NS delegation with several other domains, including winnerproperty.com, laakira.com, stoweschoolsvt.com and two others.

These name servers are regularly seen alongside paul.ns.cloudflare.com and algin.ns.cloudflare.com as name servers.

Hostnames that resolve to 6 IP addresses:

arya.ns.cloudflare.com resolves to 108.162.192.70, 172.64.32.70 and 173.245.58.70 among others, with 3 other IP addresses in total.

morgan.ns.cloudflare.com resolves to 108.162.195.132, 162.159.44.132 and 172.64.35.132 among others, with 3 other IP addresses in total.