hostmaster.mathproblems.org - dns.ninja
hostmaster.mathproblems.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 104.143.9.210🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| A | 104.143.9.211🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| NS | expired-domain-ns50.directnic.com ⚠️ Not in parent delegation | ||||||
| A | 104.143.9.50🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| NS | expired-domain-ns51.directnic.com ⚠️ Not in parent delegation | ||||||
| A | 104.143.9.51🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| MX | deadletter.directnic.com ⭐ | ||||||
| TXT | This Domain is EXPIRED. Please contact directnic.com to renew. | ||||||
mathproblems.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 104.143.9.210🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| A | 104.143.9.211🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| NS | expired-domain-ns50.directnic.com | ||||||
| NS | expired-domain-ns51.directnic.com | ||||||
| MX | deadletter.directnic.com ⭐ | ||||||
| TXT | This Domain is EXPIRED. Please contact directnic.com to renew. | ||||||
Same first word
Similar names
DNS History
12 records (5 active, 7 former)
●NSexpired-domain-ns50.directnic.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 21:02:26
●NSexpired-domain-ns51.directnic.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 21:02:26
○NSns1.parkingcrew.net2015-06-01 → 2026-05-02 · 3 obs
● 2026-05-02 20:44:30
○ 2026-08-16 21:02:26
○NSns2.parkingcrew.net2015-06-01 → 2026-05-02 · 3 obs
● 2026-05-02 20:44:30
○ 2026-08-16 21:02:26
●MXdeadletter.directnic.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 21:02:26
○MXmail.h-email.net2015-06-01 → 2026-05-02 · 3 obs
● 2026-05-02 20:44:30
○ 2026-08-16 21:02:26
●A104.143.9.2102026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 21:02:26
●A104.143.9.2112026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 21:02:26
○A104.247.81.992026-05-02 → 2026-05-02 · 3 obs
● 2026-05-02 20:44:30
○ 2026-08-16 21:02:26
○A185.53.178.92015-06-01 → 2015-10-24 · 4 obs
● 2015-10-24 05:11:52
○ 2016-02-02 10:44:42
○ 2026-08-16 21:02:26
○A185.53.179.62016-02-02 → 2016-02-02 · 4 obs
● 2016-02-02 10:44:42
○ 2016-04-27 07:26:56
○ 2026-08-16 21:02:26
○A52.18.157.1752016-04-27 → 2016-04-27 · 4 obs
● 2016-04-27 07:26:56
○ 2026-05-02 20:44:30
○ 2026-08-16 21:02:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| mathproblems.org | expired-domain-ns51.directnic.com, expired-domain-ns50.directnic.com | - |
✅ Authoritative Response
Server:104.143.9.50
NS records: expired-domain-ns51.directnic.com, expired-domain-ns50.directnic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathproblems.org (unsigned zone)
⏱️ Timing
Total: 509ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.143.9.210, 104.143.9.211 |
| NS | 2 | expired-domain-ns50.directnic.com, expired-domain-ns51.directnic.com |
| MX | 1 | deadletter.directnic.com (pri: 0) |
| TXT | 1 | This Domain is EXPIRED. Please contact d |
Analysis
IP Addresses
hostmaster.mathproblems.org points to the IP addresses 104.143.9.210 and 104.143.9.211
willers.biz, showarecenter.net, wantedretrorods.com plus two other host names have IP numbers in common with hostmaster.mathproblems.org.
Name Servers
hostmaster.mathproblems.org has two authoritative name servers — expired-domain-ns50.directnic.com and expired-domain-ns51.directnic.com.
The name server configuration of hostmaster.mathproblems.org is shared with other domains, for instance ns1.prosto(0x706f726e)o.cool, newkirktasker.com, www.investbank.biz and two others.
The name servers of hostmaster.mathproblems.org overlap at least partially with those of other domains — among them assnhqtrs.com, genewebbcarvings.com, fedorento.com and two more.
These name servers tend to appear together with the name servers suspended-domain-ns216.directnic.com, suspended-domain-ns217.directnic.com and ns0.directnic.com, plus two others.
Both expired-domain-ns50.directnic.com and expired-domain-ns51.directnic.com have a single IP address each — expired-domain-ns50.directnic.com resolves to 104.143.9.50 while expired-domain-ns51.directnic.com resolves to 104.143.9.51.
Mail Servers
hostmaster.mathproblems.org uses one mail server — deadletter.directnic.com.
The mail server setup of hostmaster.mathproblems.org matches that of other domains such as mail.startouring.net, marketing.scalecomputing.co.uk, dns2.brk10.com and two others.