techcourse.org - dns.ninja
techcourse.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| NS | ns1.cyvibe.com ⭐ | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| NS | ns2.cyvibe.com | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| MX | techcourse.org ⭐ | ||||||
| A | 77.235.38.231🇨🇾 LEASEWEB-NL-AMS-0177.235.32.0/19 | ||||||
| PTR | srv.esbe.hr | ||||||
| TXT | v=spf1 ip4:77.235.38.231 +a +mx +ip4:77.235.57.96 -all | ||||||
| SOA | ns1.cyvibe.comadmin@cyvibe.com 2026-06-15 #0 | ||||||
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=1785626221 | ||||||
MX for
techcourse.org |
Same first word
techcourse.ru |
techcourse.co.kr |
techcourse.org |
Similar names
DNS History
11 records (4 active, 7 former)
○NSns0.transip.net2015-08-11 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-08-01 23:46:50
●NSns1.cyvibe.com2026-03-21 → 2026-08-01 · 3 obs
● 2026-03-21 15:30:28
● 2026-08-01 23:46:50
○NSns1.transip.net2015-08-11 → 2017-02-12 · 4 obs
● 2017-02-12 03:08:30
○ 2019-01-17 13:55:10
○ 2026-08-01 23:46:50
○NSns1.transip.nl2019-01-17 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-08-01 23:46:50
●NSns2.cyvibe.com2026-03-21 → 2026-08-01 · 3 obs
● 2026-03-21 15:30:28
● 2026-08-01 23:46:50
○NSns2.transip.eu2019-01-17 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-08-01 23:46:50
○NSns2.transip.net2015-08-11 → 2017-02-12 · 4 obs
● 2017-02-12 03:08:30
○ 2019-01-17 13:55:10
○ 2026-08-01 23:46:50
○MXrelay.transip.nl2015-08-11 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-08-01 23:46:50
●MXtechcourse.org2015-08-11 → 2026-08-01 · 2 obs
● 2026-08-01 23:46:50
●A77.235.38.2312026-03-21 → 2026-08-01 · 3 obs
● 2026-03-21 15:30:28
● 2026-08-01 23:46:50
○A97.74.144.1122015-08-11 → 2019-01-17 · 4 obs
● 2019-01-17 13:55:10
○ 2026-03-21 15:30:28
○ 2026-08-01 23:46:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| techcourse.org | ns1.cyvibe.com, ns2.cyvibe.com | - |
✅ Authoritative Response
Server:77.235.38.231
NS records: ns1.cyvibe.com, ns2.cyvibe.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for techcourse.org (unsigned zone)
⏱️ Timing
Total: 517ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 77.235.38.231 |
| NS | 2 | ns2.cyvibe.com, ns1.cyvibe.com |
| MX | 1 | techcourse.org (pri: 0) |
| TXT | 1 | v=spf1 ip4:77.235.38.231 +a +mx +ip4:77. |
| SOA | 1 | ns1.cyvibe.com admin.cyvibe.com |
Analysis
Mail Server Role
techcourse.org handles its own mail, functioning as its own mail server.
IP Addresses
techcourse.org resolves to just one IP address, 77.235.38.231.
Two other host names, along with cyberthirst.com, qumb.com and biotechsurvey.com, also share IP numbers with techcourse.org.
Name Servers
techcourse.org uses two name servers for its delegation: ns1.cyvibe.com and ns2.cyvibe.com.
techcourse.org shares its NS records with other domains, for example texuz.com, ecovegi.com, uflee.com and two others.
ns1.cyvibe.com resolves to 77.235.38.231; ns2.cyvibe.com resolves to the same IP address, 77.235.38.231.
Both ns1.cyvibe.com and ns2.cyvibe.com resolve to 77.235.38.231 IP addresses each.
Mail Servers
techcourse.org is served by just one mail server: techcourse.org.
techcourse.org directs to just one IP number, 77.235.38.231.