mathproblems.org - dns.ninja
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 | ||||||
| A | 104.143.9.50🇺🇸 THEPRODUCERS104.143.9.0/24 The Producers, Inc. Equinix NY4 | ||||||
| NS | expired-domain-ns51.directnic.com | ||||||
| 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. | ||||||
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=1786874407 | ||||||
Subdomains
hostmaster.mathproblems.org |
Same first word
mathproblems.org |
mathproblems.us |
mathproblems.info |
mathproblems.net |
Similar names
DNS History
14 records (5 active, 9 former)
●NSexpired-domain-ns50.directnic.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 10:23:42
●NSexpired-domain-ns51.directnic.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 10:23:42
○NSns1.parkingcrew.net2015-06-18 → 2018-09-08 · 3 obs
● 2018-09-08 23:10:18
○ 2026-08-16 10:23:42
○NSns2.parkingcrew.net2015-06-18 → 2018-09-08 · 3 obs
● 2018-09-08 23:10:18
○ 2026-08-16 10:23:42
●MXdeadletter.directnic.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 10:23:42
○MXmail.h-email.net2015-06-18 → 2018-09-08 · 4 obs
● 2018-09-08 23:10:18
○ 2026-07-14 15:55:50
○ 2026-08-16 10:23:42
●A104.143.9.2102026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 10:23:42
●A104.143.9.2112026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 10:23:42
○A104.247.81.992026-03-25 → 2026-03-25 · 3 obs
● 2026-03-25 13:06:58
○ 2026-08-16 10:23:42
○A185.53.178.62018-09-08 → 2018-09-08 · 4 obs
● 2018-09-08 23:10:18
○ 2026-03-25 13:06:58
○ 2026-08-16 10:23:42
○A185.53.178.92015-06-18 → 2015-11-05 · 4 obs
● 2015-11-05 13:43:42
○ 2016-02-02 22:29:16
○ 2026-08-16 10:23:42
○A185.53.179.62016-02-02 → 2016-02-02 · 4 obs
● 2016-02-02 22:29:16
○ 2016-04-26 23:50:46
○ 2026-08-16 10:23:42
○A185.53.179.92017-01-03 → 2017-01-03 · 4 obs
● 2017-01-03 05:32:16
○ 2018-09-08 23:10:18
○ 2026-08-16 10:23:42
○A52.18.157.1752016-04-26 → 2016-04-26 · 4 obs
● 2016-04-26 23:50:46
○ 2017-01-03 05:32:16
○ 2026-08-16 10:23:42
🔍 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: 309ms | 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
Hierarchy
The domain hostmaster.mathproblems.org falls under the parent mathproblems.org.
IP Addresses
mathproblems.org has two IP addresses: 104.143.9.210 and 104.143.9.211
Among the host names that share IP numbers with mathproblems.org are rockportnews.com, cartgirlcalendar.com, 12xbig(0x636f636b)s.com and two others.
Name Servers
DNS delegation for mathproblems.org points to two name servers: expired-domain-ns50.directnic.com and expired-domain-ns51.directnic.com.
mathproblems.org has the same name server delegation as a number of other domains, such as mail.helenki.com, ns1.d3hosting.com, theconcertforpeace.org and two more.
At least some of mathproblems.org's name servers are shared with other domains, for example cabase.org, taboostories.net, ericeverlast.com and two more.
These name servers tend to co-occur with suspended-domain-ns216.directnic.com, suspended-domain-ns217.directnic.com, ns0.directnic.com and 3 other name servers in the same DNS delegations.
Each of expired-domain-ns50.directnic.com and expired-domain-ns51.directnic.com has one IP address: expired-domain-ns50.directnic.com uses 104.143.9.50 and expired-domain-ns51.directnic.com uses 104.143.9.51.
Mail Servers
mathproblems.org routes its mail through a single mail server, deadletter.directnic.com.
mathproblems.org has the same mail server arrangement as a number of other domains, for example ns2.foodhost.net, northreadingchiropractic.com, tnee.me and two more.