openedcourse.com - dns.ninja
openedcourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.dotster.com ⭐ | ||||||
| A | 172.64.52.250🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.dotster.com | ||||||
| A | 172.64.53.155🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| MX | mx.openedcourse.com ⭐ | ||||||
| SOA | ns1.dotster.comdnsadmin@dotster.com 2012-08-30 #49 | ||||||
com
| 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=1783655652 | ||||||
Same first word
openedcourse.net |
openedcourse.com |
openedcourse.org |
Similar names
DNS History
5 records (3 active, 2 former)
●NSns1.dotster.com2015-06-10 → 2026-07-10 · 2 obs
● 2026-07-10 04:00:30
●NSns2.dotster.com2015-06-10 → 2026-07-10 · 2 obs
● 2026-07-10 04:00:30
●MXmx.openedcourse.com2015-06-10 → 2026-07-10 · 2 obs
● 2026-07-10 04:00:30
○A66.96.149.322016-04-07 → 2017-08-18 · 5 obs
● 2016-04-07 07:00:48
● 2017-08-18 01:36:58
○ 2026-07-10 03:42:16
○ 2026-07-10 04:00:30
○A66.96.161.1462015-06-10 → 2016-01-20 · 4 obs
● 2016-01-20 06:28:56
○ 2016-04-07 07:00:48
○ 2026-07-10 04:00:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net... | - |
| openedcourse.com | ns1.dotster.com, ns2.dotster.com | 2 records |
✅ 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.com (unsigned zone)
⏱️ Timing
Total: 2223ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 66.96.149.32 |
| NS | 2 | ns2.dotster.com, ns1.dotster.com |
| MX | 1 | mx.openedcourse.com (pri: 30) |
| TXT | 1 | v=spf1 ip4:66.96.128.0/18 include:websit |
| SOA | 1 | ns1.dotster.com dnsadmin.dotster.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dotster.com, ns2.dotster.com)
Analysis
Name Servers
openedcourse.com is delegated to two name servers: ns1.dotster.com and ns2.dotster.com.
openedcourse.com uses the same name servers as several other domains — among them chingford.com, nicolasholiday.com, ciban.com and two more.
openedcourse.com shares at least some of its name servers with other domains, including replivault.com, riemersystems.net, snfs.com and two others.
These name servers are frequently paired with the name servers ns1.yourhostingaccount.com and ns2.yourhostingaccount.com.
ns1.dotster.com and ns2.dotster.com each resolve to one IP number: ns1.dotster.com points to 172.64.52.250 and ns2.dotster.com points to 172.64.53.155.
Mail Servers
Mail for openedcourse.com is handled by a single mail server, mx.openedcourse.com.