mathreference.org - dns.ninja
mathreference.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 78.46.202.169🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5 | ||||||
| PTR | static.169.202.46.78.clients.your-server.de | ||||||
| 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 | ||||||
| MX | mail.joker.com ⭐ | ||||||
| A | 194.245.148.6🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | mailfw3.joker-forward.com | ||||||
| A | 194.245.148.9🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | mailfw4.joker-forward.com | ||||||
| TXT | google-site-verification=mQD8eXjWUxlnHdKJPFSL3u_rfSRJbvbIrFnetoO2TZI | ||||||
| SOA | x.ns.joker.comhostmaster@joker.com 2023-01-03 #40 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1785713043 | ||||||
Previously NS for
Subdomains
Same first word
mathreference.com |
mathreference.org |
DNS History
5 records (5 active, 0 former)
●NSx.ns.joker.com2026-03-28 → 2026-08-02 · 2 obs
● 2026-08-02 23:56:32
●NSy.ns.joker.com2026-03-28 → 2026-08-02 · 2 obs
● 2026-08-02 23:56:32
●NSz.ns.joker.com2026-03-28 → 2026-08-02 · 2 obs
● 2026-08-02 23:56:32
●A78.46.202.1692026-03-28 → 2026-08-02 · 2 obs
● 2026-08-02 23:56:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| mathreference.org | y.ns.joker.com, x.ns.joker.com, z.ns.joker.com | - |
✅ Authoritative Response
Server:23.88.49.189
NS records: y.ns.joker.com, x.ns.joker.com, z.ns.joker.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathreference.org (unsigned zone)
⏱️ Timing
Total: 929ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 78.46.202.169 |
| NS | 3 | z.ns.joker.com, y.ns.joker.com... |
| MX | 1 | mail.joker.com (pri: 10) |
| TXT | 1 | google-site-verification=mQD8eXjWUxlnHdK |
| SOA | 1 | x.ns.joker.com hostmaster.joker.com |
Analysis
Hierarchy
mathreference.org is a parent domain, with h3.mathreference.org, ns2.mathreference.org and ns3.mathreference.org beneath it.
IP Addresses
mathreference.org resolves to just one IP address, 78.46.202.169.
Two other host names, along with static.169.202.46.78.clients.your-server.de, usspalic.org and lacicrevaizacini.com, also share IP numbers with mathreference.org.
Name Servers
mathreference.org is served by three name servers: x.ns.joker.com, y.ns.joker.com and z.ns.joker.com.
mathreference.org has at least partial name server overlap with other domains, such as euussciencetechnology.eu, asiadatingspace.com, forleaves.org and two others.
These name servers tend to appear together with the name servers a.ns.joker.com, b.ns.joker.com and c.ns.joker.com.
Host names that have two IP addresses:
The A records for y.ns.joker.com return 23.88.49.189 and 2a01:4f8:c0c:165b::1.
The A records for z.ns.joker.com return 192.95.37.184 and 2607:5300:203:7e6d::2222.
Host names that point to one IP address:
x.ns.joker.com resolves to the IP address 194.245.103.13.
Mail Servers
The sole mail server for mathreference.org is mail.joker.com.
Among the domains sharing a mail server setup with mathreference.org are hytestsolutions.com, anaroque.com, hollweger.eu and two others.
mail.joker.com has two IP addresses: 194.245.148.6 and 194.245.148.9.