opencfd.com - robtex.com
opencfd.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 20.50.153.39🇳🇱 Microsoft20.48.0.0/12 | ||||||
| NS | x.ns.joker.com ⭐ | ||||||
| A | 194.245.103.13🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | x.ns.joker.com | ||||||
| NS | y.ns.joker.com | ||||||
| A | 2a01:4f8:c0c:165b::1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | y.ns.joker.com | ||||||
| A | 23.88.49.189🇩🇪 Hetzner23.88.0.0/17 HETZNER-DC | ||||||
| PTR | static.189.49.88.23.clients.your-server.de | ||||||
| NS | z.ns.joker.com | ||||||
| A | 2607:5300:203:7e6d::2222🇨🇦 OVH2607:5300::/32 Hosting route | ||||||
| PTR | z.ns.joker.com | ||||||
| A | 192.95.37.184🇨🇦 OVH192.95.0.0/18 Hosting route | ||||||
| PTR | z.ns.joker.com | ||||||
| TXT | 60q0m8j4p603ct3rt3qfz98ftb95djf9 | ||||||
| SOA | x.ns.joker.comhostmaster@joker.com 2022-01-26 #64 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Same first word
opencfd.com |
Similar names
DNS History
10 records (4 active, 6 former)
○NSa.ns.joker.com2015-08-04 → 2017-08-21 · 4 obs
● 2017-08-21 19:26:26
○ 2026-03-02 08:55:30
○ 2026-03-03 05:54:42
○NSb.ns.joker.com2015-08-04 → 2017-08-21 · 4 obs
● 2017-08-21 19:26:26
○ 2026-03-02 08:55:30
○ 2026-03-03 05:54:42
○NSc.ns.joker.com2015-08-04 → 2017-08-21 · 4 obs
● 2017-08-21 19:26:26
○ 2026-03-02 08:55:30
○ 2026-03-03 05:54:42
●NSx.ns.joker.com2026-03-02 → 2026-03-03 · 3 obs
● 2026-03-02 08:55:30
● 2026-03-03 05:54:42
●NSy.ns.joker.com2026-03-02 → 2026-03-03 · 3 obs
● 2026-03-02 08:55:30
● 2026-03-03 05:54:42
●NSz.ns.joker.com2026-03-02 → 2026-03-03 · 3 obs
● 2026-03-02 08:55:30
● 2026-03-03 05:54:42
○A137.117.136.392015-08-04 → 2016-07-14 · 4 obs
● 2016-07-14 04:24:58
○ 2017-08-21 19:26:26
○ 2026-03-03 05:54:42
●A20.50.153.392026-03-02 → 2026-03-03 · 3 obs
● 2026-03-02 08:55:30
● 2026-03-03 05:54:42
○A51.124.12.352026-03-02 → 2026-03-03 · 2 obs
○ 2026-03-03 05:54:42
○A51.141.37.2452017-08-21 → 2017-08-21 · 4 obs
● 2017-08-21 19:26:26
○ 2026-03-02 08:55:30
○ 2026-03-03 05:54:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, c.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net... | - |
| opencfd.com | x.ns.joker.com, y.ns.joker.com, z.ns.joker.com | 5 records |
✅ Authoritative Response
Server: 194.245.103.13
NS records: x.ns.joker.com, y.ns.joker.com, z.ns.joker.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for opencfd.com (unsigned zone)
⏱️ Timing
Total: 518ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | x.ns.joker.com, z.ns.joker.com... |
| TXT | 1 | 60q0m8j4p603ct3rt3qfz98ftb95djf9 |
| SOA | 1 | x.ns.joker.com hostmaster.joker.com |
📌 Glue Records Collected
Total: 5
Out-of-bailiwick: 5 (x.ns.joker.com, y.ns.joker.com, y.ns.joker.com...)
Analysis
IP Addresses
opencfd.com points to a single IP: 20.50.153.39.
Other host names, for instance bisser.io, deck.nl, htlwienwest.at, yogaguide.pl and novaz.be share IP numbers with opencfd.com.
Name Servers
opencfd.com is delegated to three name servers: x.ns.joker.com, y.ns.joker.com and z.ns.joker.com.
opencfd.com partially shares name servers with other domains; examples include bedc.info, ukrfood.com, exdci.eu, wallstnut.com and monmeetings.org.
These name servers are commonly used with a.ns.joker.com, b.ns.joker.com and c.ns.joker.com.
Host names with two IP numbers:
y.ns.joker.com points to 2a01:4f8:c0c:165b::1 and 23.88.49.189.
z.ns.joker.com points to 2607:5300:203:7e6d::2222 and 192.95.37.184.
Host names with one IP number:
x.ns.joker.com points to 194.245.103.13.