chuk.cz - robtex.com
chuk.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:2a65🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:ccf6🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.42.101Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.204.246🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | elmo.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3ba3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | elmo.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1a3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | elmo.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21a3🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | elmo.ns.cloudflare.com | ||||||
| A | 108.162.193.163🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | elmo.ns.cloudflare.com | ||||||
| A | 172.64.33.163🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | elmo.ns.cloudflare.com | ||||||
| A | 173.245.59.163🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | elmo.ns.cloudflare.com | ||||||
| NS | marjory.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3ac1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | marjory.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0c1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | marjory.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20c1🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | marjory.ns.cloudflare.com | ||||||
| A | 108.162.192.193🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | marjory.ns.cloudflare.com | ||||||
| A | 172.64.32.193🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | marjory.ns.cloudflare.com | ||||||
| A | 173.245.58.193🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | marjory.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.42.101, 172.67.204.246 | ||||||
| IPv6 hints | 2606:4700:3030::6815:2a65, 2606:4700:3035::ac43:ccf6 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=161, name=cloudflare-ech.com | ||||||
| SOA | elmo.ns.cloudflare.comdns@cloudflare.com serial=2402635663 | ||||||
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1777313837 | ||||||
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
●NSelmo.ns.cloudflare.com2026-04-07 → 2026-04-27 · 2 obs
● 2026-04-27 19:04:44
●NSmarjory.ns.cloudflare.com2026-04-07 → 2026-04-27 · 2 obs
● 2026-04-27 19:04:44
●A104.21.42.1012026-04-07 → 2026-04-27 · 5 obs
● 2026-04-10 03:49:26
○ 2026-04-21 23:07:04
● 2026-04-24 21:10:02
● 2026-04-27 19:04:44
●A172.67.204.2462026-04-07 → 2026-04-27 · 5 obs
● 2026-04-10 03:49:26
○ 2026-04-21 23:07:04
● 2026-04-24 21:10:02
● 2026-04-27 19:04:44
○A188.114.96.02026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 23:07:04
○ 2026-04-24 21:10:02
○ 2026-04-27 19:04:44
○A188.114.97.02026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 23:07:04
○ 2026-04-24 21:10:02
○ 2026-04-27 19:04:44
●A2606:4700:3030::6815:2a652026-04-07 → 2026-04-27 · 5 obs
● 2026-04-10 03:49:26
○ 2026-04-21 23:07:04
● 2026-04-24 21:10:02
● 2026-04-27 19:04:44
●A2606:4700:3035::ac43:ccf62026-04-07 → 2026-04-27 · 5 obs
● 2026-04-10 03:49:26
○ 2026-04-21 23:07:04
● 2026-04-24 21:10:02
● 2026-04-27 19:04:44
○A2a06:98c1:3120::2026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 23:07:04
○ 2026-04-24 21:10:02
○ 2026-04-27 19:04:44
○A2a06:98c1:3121::2026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 23:07:04
○ 2026-04-24 21:10:02
○ 2026-04-27 19:04:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| chuk.cz | elmo.ns.cloudflare.com, marjory.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.193.163
NS records: elmo.ns.cloudflare.com, marjory.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for chuk.cz (unsigned zone)
⏱️ Timing
Total: 1298ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.42.101, 172.67.204.246 |
| AAAA | 2 | 2606:4700:3030::6815:2a65, 2606:4700:3035::ac43:ccf6 |
| NS | 2 | elmo.ns.cloudflare.com, marjory.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | elmo.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
Four IP numbers are pointed to by chuk.cz: 2606:4700:3030::6815:2a65, 2606:4700:3035::ac43:ccf6, 104.21.42.101 and 172.67.204.246.
other host names including portalzhh.lb.karoseribekasi.my-online.store, loteriatradicionalpr.app, karoseri-arm-roll.product.karoseribekasi.my-online.store, wifetch.com and www.ryanlawllp.com share IP numbers with chuk.cz.
Name Servers
chuk.cz is delegated to two name servers elmo.ns.cloudflare.com and marjory.ns.cloudflare.com.
chuk.cz shares the same name server setup as other domains, for instance mon-relecteur-correcteur.fr, rightsolicitor.co.uk, remont-byttekhniki-tym.ru, tktoursinc.com and juergenhoeller.com.
chuk.cz at least partially shares name servers with other domains, for instance ltab.ca, mnyapp.com, baclofen.fun, ubkzywf.com and blangdon.com.
these name servers are often used together with ray.ns.cloudflare.com, theo.ns.cloudflare.com, vera.ns.cloudflare.com and kara.ns.cloudflare.com.
Host names with six IP numbers:
Host name elmo.ns.cloudflare.com points to: 2606:4700:58::adf5:3ba3, 2803:f800:50::6ca2:c1a3, 2a06:98c1:50::ac40:21a3, 108.162.193.163, 172.64.33.163 and 173.245.59.163.
Host name marjory.ns.cloudflare.com points to: 2606:4700:50::adf5:3ac1, 2803:f800:50::6ca2:c0c1, 2a06:98c1:50::ac40:20c1, 108.162.192.193, 172.64.32.193 and 173.245.58.193.