tutorialcourse.com - dns.ninja
tutorialcourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 207.148.248.143🇺🇸 EIG-29873207.148.248.0/24 | ||||||
| NS | ns.buydomains.com ⚠️ Not in zone NS records | ||||||
| A | 52.20.26.87🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-52-20-26-87.compute-1.amazonaws.com | ||||||
| NS | this-domain-for-sale.com ⚠️ Not in zone NS records | ||||||
| A | 52.20.26.87🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-52-20-26-87.compute-1.amazonaws.com | ||||||
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=1781600725 | ||||||
Subdomains
mx.tutorialcourse.com |
Same first word
tutorialcourse.com |
DNS History
9 records (3 active, 6 former)
●NSns.buydomains.com2017-01-27 → 2026-06-16 · 3 obs
● 2017-01-27 15:33:08
● 2026-06-16 09:12:40
○NSns1.ipage.com2015-10-18 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-06-16 09:12:40
○NSns2.ipage.com2015-10-18 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-06-16 09:12:40
●NSthis-domain-for-sale.com2026-03-09 → 2026-06-16 · 3 obs
● 2026-03-09 09:05:12
● 2026-06-16 09:12:40
○MXmx.tutorialcourse.com2015-10-18 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-06-16 09:12:40
○A141.8.225.1242017-01-27 → 2017-01-27 · 4 obs
● 2017-01-27 15:33:08
○ 2018-08-18 11:43:18
○ 2026-06-16 09:12:40
●A207.148.248.1432018-08-18 → 2026-06-16 · 3 obs
● 2018-08-18 11:43:18
● 2026-06-16 09:12:40
○A66.96.147.1142015-10-18 → 2016-01-19 · 4 obs
● 2016-01-19 02:33:30
○ 2016-04-22 13:17:48
○ 2026-06-16 09:12:40
○A66.96.149.162016-04-22 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-06-16 09:12:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| tutorialcourse.com | ns.buydomains.com, this-domain-for-sale.com | 2 records |
✅ Authoritative Response
Server:52.4.207.204
NS records: ns.buydomains.com, this-domain-for-sale.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tutorialcourse.com (unsigned zone)
⏱️ Timing
Total: 3164ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 207.148.248.143 |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns.buydomains.com, this-domain-for-sale.com)
Analysis
Hierarchy
mx.tutorialcourse.com is a subdomain of tutorialcourse.com.
IP Addresses
tutorialcourse.com resolves to just one IP address, 207.148.248.143.
Two other host names, along with sliverstream.com, meatbasics.com and www.conservativeplatform.com, also share IP numbers with tutorialcourse.com.
Name Servers
tutorialcourse.com is delegated to two name servers: this-domain-for-sale.com and ns.buydomains.com.
tutorialcourse.com shares its NS records with other domains, for example optimizationworld.com, rockportvfd.com, schoolinghome.com and two others.
tutorialcourse.com shares at least some of its name servers with other domains, such as veracitystew.com.
this-domain-for-sale.com and ns.buydomains.com both resolve to the same single IP address: 52.20.26.87.
this-domain-for-sale.com and ns.buydomains.com are host names that each point to 52.20.26.87 IP addresses.