tutorialcourse.com - robtex.com
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 | 162.159.25.170Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | this-domain-for-sale.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.25.170Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
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=1788170165 | ||||||
Subdomains
mx.tutorialcourse.com |
Same first word
tutorialcourse.com |
Similar names
Previous names
Next names
DNS History
9 records (3 active, 6 former)
●NSns.buydomains.com2017-01-27 → 2026-08-31 · 3 obs
● 2017-01-27 15:33:08
● 2026-08-31 10:01:06
○NSns1.ipage.com2015-10-18 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-08-31 10:01:06
○NSns2.ipage.com2015-10-18 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-08-31 10:01:06
●NSthis-domain-for-sale.com2026-03-09 → 2026-08-31 · 3 obs
● 2026-03-09 09:05:12
● 2026-08-31 10:01:06
○MXmx.tutorialcourse.com2015-10-18 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-08-31 10:01:06
○A141.8.225.1242017-01-27 → 2017-01-27 · 4 obs
● 2017-01-27 15:33:08
○ 2018-08-18 11:43:18
○ 2026-08-31 10:01:06
●A207.148.248.1432018-08-18 → 2026-08-31 · 15 obs
● 2018-08-18 11:43:18
○ 2026-08-22 09:51:42
● 2026-08-24 01:46:32
○ 2026-08-25 02:56:46
● 2026-08-26 00:27:24
○ 2026-08-26 18:19:34
● 2026-08-28 11:56:56
○ 2026-08-28 15:21:26
● 2026-08-28 21:02:54
○ 2026-08-29 02:59:28
● 2026-08-29 16:55:34
○ 2026-08-30 09:37:00
● 2026-08-30 11:00:10
● 2026-08-31 10:01:06
○A66.96.147.1142015-10-18 → 2016-01-19 · 4 obs
● 2016-01-19 02:33:30
○ 2016-04-22 13:17:48
○ 2026-08-31 10:01:06
○A66.96.149.162016-04-22 → 2016-04-22 · 4 obs
● 2016-04-22 13:17:48
○ 2017-01-27 15:33:08
○ 2026-08-31 10:01:06
🔍 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:162.159.25.170
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: 3496ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns.buydomains.com, this-domain-for-sale.com)
Analysis
Hierarchy
tutorialcourse.com serves as the parent of mx.tutorialcourse.com.
IP Addresses
tutorialcourse.com resolves to one IP address: 207.148.248.143.
meatbasics.com, www.conservativeplatform.com, fancyaffair.com and two other host names share IP numbers with tutorialcourse.com.
Name Servers
tutorialcourse.com is served by two delegated name servers, this-domain-for-sale.com and ns.buydomains.com.
tutorialcourse.com uses the same name servers as several other domains — among them gaytruth.com, optimizationworld.com, rockportvfd.com and two more.
tutorialcourse.com has at least partial name server overlap with other domains, such as airlinebargains.com, barenutrients.com, remotesafeguard.com and two others.
It is common to find these name servers paired with the name servers ns2.buydomains.com.
this-domain-for-sale.com and ns.buydomains.com share one IP address between them — 162.159.25.170.
These two host names — this-domain-for-sale.com and ns.buydomains.com — each point to 162.159.25.170 IP addresses.