coursesource.org - dns.ninja
coursesource.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 173.236.136.187🇺🇸 AS26347173.236.128.0/17 New Dream Network, LLC 417 Associated Rd. PMB 257 Brea, CA 92821 UNITED STATES | ||||||
| PTR | apache2-grog.iad1-shared-e1-21.dreamhost.com | ||||||
| NS | ns1.dreamhost.com ⭐ | ||||||
| A | 162.159.26.14Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.dreamhost.com | ||||||
| NS | ns2.dreamhost.com | ||||||
| A | 162.159.26.81Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.dreamhost.com | ||||||
| NS | ns3.dreamhost.com | ||||||
| A | 162.159.27.84Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.dreamhost.com | ||||||
| SOA | ns1.dreamhost.comhostmaster@dreamhost.com 2026-06-11 #3 | ||||||
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=1783634831 | ||||||
Same first word
coursesource.com |
coursesource.net |
coursesource.org |
Similar names
DNS History
9 records (4 active, 5 former)
●NSns1.dreamhost.com2015-08-15 → 2026-07-09 · 2 obs
● 2026-07-09 22:35:48
●NSns2.dreamhost.com2015-08-15 → 2026-07-09 · 2 obs
● 2026-07-09 22:35:48
●NSns3.dreamhost.com2015-08-15 → 2026-07-09 · 2 obs
● 2026-07-09 22:35:48
●A173.236.136.1872026-03-15 → 2026-07-09 · 3 obs
● 2026-03-15 23:02:32
● 2026-07-09 22:35:48
○A192.237.224.602017-01-16 → 2017-01-16 · 4 obs
● 2017-01-16 20:40:34
○ 2018-09-29 14:10:08
○ 2026-07-09 22:35:48
○A198.58.116.632015-08-15 → 2016-05-09 · 4 obs
● 2016-05-09 10:41:36
○ 2017-01-16 20:40:34
○ 2026-07-09 22:35:48
○A23.185.0.12018-09-29 → 2018-09-29 · 4 obs
● 2018-09-29 14:10:08
○ 2026-03-15 23:02:32
○ 2026-07-09 22:35:48
○A2620:12a:8000::12018-09-29 → 2018-09-29 · 4 obs
● 2018-09-29 14:10:08
○ 2026-03-15 23:02:32
○ 2026-07-09 22:35:48
○A2620:12a:8001::12018-09-29 → 2018-09-29 · 4 obs
● 2018-09-29 14:10:08
○ 2026-03-15 23:02:32
○ 2026-07-09 22:35:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| coursesource.org | ns3.dreamhost.com, ns2.dreamhost.com, ns1.dreamhost.com | - |
✅ Authoritative Response
Server:162.159.26.81
NS records: ns3.dreamhost.com, ns2.dreamhost.com, ns1.dreamhost.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursesource.org (unsigned zone)
⏱️ Timing
Total: 341ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 173.236.136.187 |
| NS | 3 | ns3.dreamhost.com, ns1.dreamhost.com... |
| SOA | 1 | ns1.dreamhost.com hostmaster.dreamhost.c |
Analysis
IP Addresses
coursesource.org directs to one IP number, which is 173.236.136.187.
Among the host names that share IP numbers with coursesource.org are tv.heardledecades.xyz, www.fppr.net, tupamaras.com and two others.
Name Servers
coursesource.org is delegated to three name servers: ns1.dreamhost.com, ns2.dreamhost.com and ns3.dreamhost.com.
coursesource.org has at least partial name server overlap with other domains, such as paqc.net, staticwave.ca, ilpl.us and two others.
ns1.dreamhost.com, ns2.dreamhost.com and ns3.dreamhost.com each resolve to a single IP address: ns1.dreamhost.com resolves to 162.159.26.14, ns2.dreamhost.com resolves to 162.159.26.81 and ns3.dreamhost.com resolves to 162.159.27.84.