openedcourse.net - dns.ninja
openedcourse.net
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.dotster.com ⭐ ⚠️ Not in zone NS records | ||||||
| A | 172.64.52.250🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.dotster.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.53.155🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| MX | mx.openedcourse.net ⭐ | ||||||
| SOA | ns1.dotster.comdnsadmin@dotster.com 2012-08-30 #49 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783475761 | ||||||
Subdomains
mx.openedcourse.net |
Same first word
openedcourse.net |
openedcourse.com |
openedcourse.org |
Similar names
DNS History
5 records (3 active, 2 former)
●NSns1.dotster.com2015-08-17 → 2026-07-08 · 2 obs
● 2026-07-08 02:04:36
●NSns2.dotster.com2015-08-17 → 2026-07-08 · 2 obs
● 2026-07-08 02:04:36
●MXmx.openedcourse.net2015-08-17 → 2026-07-08 · 2 obs
● 2026-07-08 02:04:36
○A66.96.149.12016-03-22 → 2026-04-02 · 4 obs
● 2016-03-22 22:04:28
● 2026-04-02 22:30:28
○ 2026-07-08 02:04:36
○A66.96.161.1462015-08-17 → 2015-12-11 · 4 obs
● 2015-12-11 18:07:58
○ 2016-03-22 22:04:28
○ 2026-07-08 02:04:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| openedcourse.net | ns1.dotster.com, ns2.dotster.com | - |
✅ Authoritative Response
Server:172.64.53.155
NS records: ns1.dotster.com, ns2.dotster.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for openedcourse.net (unsigned zone)
⏱️ Timing
Total: 3246ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| MX | 1 | mx.openedcourse.net (pri: 30) |
| SOA | 1 | ns1.dotster.com dnsadmin.dotster.com |
Analysis
Hierarchy
mx.openedcourse.net is a subdomain of openedcourse.net.
Name Servers
openedcourse.net has two authoritative name servers — ns1.dotster.com and ns2.dotster.com.
openedcourse.net uses the same name servers as several other domains — among them consciousmanagement.com, puresimplicity.net, movementawareness.com and two more.
The name servers of openedcourse.net overlap at least partially with those of other domains — among them cletop-s.com, northstarinternetinc.com, makemoneyfromapps.com and two more.
These name servers commonly co-occur with the name servers ns1.yourhostingaccount.com, ns2.yourhostingaccount.com, ns1.dotsterhost.com and ns2.dotsterhost.com.
Both ns1.dotster.com and ns2.dotster.com have a single IP address each — ns1.dotster.com resolves to 172.64.52.250 while ns2.dotster.com resolves to 172.64.53.155.
Mail Servers
Mail for openedcourse.net is handled by a single mail server, mx.openedcourse.net.