codingtheory.org - dns.ninja
codingtheory.org
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=1785040885 | ||||||
Subdomains
ansible.codingtheory.org |
Same first word
codingtheory.org |
DNS History
11 records (6 active, 5 former)
●NSns1.dnsimple-edge.com2026-05-26 → 2026-07-26 · 3 obs
● 2026-05-26 18:58:56
● 2026-07-26 05:02:04
○NSns1.dnsimple.com2015-05-06 → 2026-05-09 · 4 obs
● 2026-05-09 18:26:20
○ 2026-05-26 18:58:56
○ 2026-07-26 05:02:04
●NSns2.dnsimple-edge.net2026-04-01 → 2026-07-26 · 3 obs
● 2026-04-01 11:29:36
● 2026-07-26 05:02:04
○NSns2.dnsimple.com2015-05-06 → 2020-02-05 · 4 obs
● 2020-02-05 16:17:40
○ 2026-04-01 11:29:36
○ 2026-07-26 05:02:04
●NSns3.dnsimple-edge.io2026-05-26 → 2026-07-26 · 3 obs
● 2026-05-26 18:58:56
● 2026-07-26 05:02:04
○NSns3.dnsimple.com2015-05-06 → 2026-05-09 · 4 obs
● 2026-05-09 18:26:20
○ 2026-05-26 18:58:56
○ 2026-07-26 05:02:04
●NSns4.dnsimple-edge.org2026-04-01 → 2026-07-26 · 3 obs
● 2026-04-01 11:29:36
● 2026-07-26 05:02:04
○NSns4.dnsimple.com2015-05-06 → 2020-02-05 · 4 obs
● 2020-02-05 16:17:40
○ 2026-04-01 11:29:36
○ 2026-07-26 05:02:04
●MXansible.codingtheory.org2015-05-06 → 2026-07-26 · 2 obs
● 2026-07-26 05:02:04
○A2600:3c03::f03c:91ff:fedf:28002016-03-20 → 2017-03-18 · 5 obs
● 2016-03-20 20:06:42
● 2017-03-18 07:26:42
○ 2020-02-05 16:17:40
○ 2026-07-26 05:02:04
●A66.228.35.2082015-05-06 → 2026-07-26 · 2 obs
● 2026-07-26 05:02:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| codingtheory.org | ns3.dnsimple-edge.io, ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns4.dnsimple-edge.org | 2 records |
✅ Authoritative Response
Server:199.247.155.53
NS records: ns3.dnsimple-edge.io, ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns4.dnsimple-edge.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for codingtheory.org (unsigned zone)
⏱️ Timing
Total: 2756ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 66.228.35.208 |
| NS | 4 | ns1.dnsimple-edge.com, ns2.dnsimple-edge.net... |
| MX | 1 | ansible.codingtheory.org (pri: 0) |
| TXT | 1 | v=spf1 mx ~all |
| SOA | 1 | ns1.dnsimple-edge.com admin.dnsimple.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns4.dnsimple-edge.org, ns4.dnsimple-edge.org)
Analysis
Hierarchy
ansible.codingtheory.org is delegated beneath codingtheory.org.
IP Addresses
codingtheory.org points to a single IP number: 66.228.35.208.
Host names such as asymptheory.com, ansible.asymptheory.com and ansible.codingtheory.org share their IP numbers with codingtheory.org.
Name Servers
codingtheory.org has four authoritative name servers: ns1.dnsimple-edge.com, ns3.dnsimple-edge.io, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org.
There is at least partial name server overlap between codingtheory.org and other domains — ballaratcoachlines.com.au, nb.io, ranyard.info and two more among them.
The name servers ns1.dnsimple.com, ns3.dnsimple.com and ns2.dnsimple.com are often found in combination with these name servers.
All four hostnames — ns1.dnsimple-edge.com, ns3.dnsimple-edge.io, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org — resolve to two IP numbers apiece: ns1.dnsimple-edge.com to 199.247.152.53 and 2620:111:8004::53; ns3.dnsimple-edge.io to 199.247.154.53 and 2620:111:8006::53; ns2.dnsimple-edge.net to 199.247.153.53 and 2620:111:8005::53; ns4.dnsimple-edge.org to 199.247.155.53 and 2620:111:8007::53.
Mail Servers
codingtheory.org has one mail server: ansible.codingtheory.org.
ansible.codingtheory.org carries two IP numbers: 66.228.35.208 and 2600:3c03::f03c:91ff:fedf:2800.