21lessons.com - dns.ninja
21lessons.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.199.108.153🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24 | ||||||
| PTR | cdn-185-199-108-153.github.com | ||||||
| A | 185.199.109.153🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24 | ||||||
| A | 185.199.110.153🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24 | ||||||
| A | 185.199.111.153🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24 | ||||||
| NS | ns05.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2160::3🇺🇸 GODADDY-DNS2603:5:2160::/44 | ||||||
| PTR | ns05.domaincontrol.com | ||||||
| A | 97.74.102.3🇺🇸 GODADDY-DNS97.74.102.0/23 | ||||||
| PTR | ns05.domaincontrol.com | ||||||
| NS | ns06.domaincontrol.com | ||||||
| A | 2603:5:2260::3🇺🇸 GODADDY-DNS2603:5:2260::/44 | ||||||
| PTR | ns06.domaincontrol.com | ||||||
| A | 173.201.70.3🇺🇸 GODADDY-DNS173.201.70.0/23 | ||||||
| PTR | ns06.domaincontrol.com | ||||||
| SOA | ns05.domaincontrol.comdns@jomax.net 2019-08-12 #11 | ||||||
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=1782254060 | ||||||
Same first word
21lessons.com |
Similar names
DNS History
10 records (6 active, 4 former)
●NSns05.domaincontrol.com2026-03-30 → 2026-06-23 · 3 obs
● 2026-03-30 18:36:34
● 2026-06-23 22:44:58
●NSns06.domaincontrol.com2026-03-30 → 2026-06-23 · 3 obs
● 2026-03-30 18:36:34
● 2026-06-23 22:44:58
○NSns1.dreamhost.com2015-06-16 → 2016-07-17 · 6 obs
● 2015-11-22 06:49:50
○ 2016-02-29 10:06:36
● 2016-07-17 11:37:44
○ 2017-03-23 21:52:40
○ 2026-06-23 22:44:58
○NSns2.dreamhost.com2015-06-16 → 2016-07-17 · 6 obs
● 2015-11-22 06:49:50
○ 2016-02-29 10:06:36
● 2016-07-17 11:37:44
○ 2017-03-23 21:52:40
○ 2026-06-23 22:44:58
○NSns3.dreamhost.com2015-06-16 → 2016-07-17 · 6 obs
● 2015-11-22 06:49:50
○ 2016-02-29 10:06:36
● 2016-07-17 11:37:44
○ 2017-03-23 21:52:40
○ 2026-06-23 22:44:58
●A185.199.108.1532026-03-30 → 2026-06-23 · 3 obs
● 2026-03-30 18:36:34
● 2026-06-23 22:44:58
●A185.199.109.1532026-03-30 → 2026-06-23 · 3 obs
● 2026-03-30 18:36:34
● 2026-06-23 22:44:58
●A185.199.110.1532026-03-30 → 2026-06-23 · 3 obs
● 2026-03-30 18:36:34
● 2026-06-23 22:44:58
●A185.199.111.1532026-03-30 → 2026-06-23 · 3 obs
● 2026-03-30 18:36:34
● 2026-06-23 22:44:58
○A64.111.125.2362015-06-16 → 2016-07-17 · 6 obs
● 2015-11-22 06:49:50
○ 2016-02-29 10:06:36
● 2016-07-17 11:37:44
○ 2017-03-23 21:52:40
○ 2026-06-23 22:44:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 21lessons.com | ns05.domaincontrol.com, ns06.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.102.3
NS records: ns05.domaincontrol.com, ns06.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21lessons.com (unsigned zone)
⏱️ Timing
Total: 1907ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 185.199.108.153, 185.199.109.153... |
| NS | 2 | ns05.domaincontrol.com, ns06.domaincontrol.com |
| SOA | 1 | ns05.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns05.domaincontrol.com, ns05.domaincontrol.com, ns06.domaincontrol.com...)
Analysis
IP Addresses
21lessons.com points to the four IP addresses 185.199.108.153, 185.199.109.153, 185.199.110.153 and 185.199.111.153.
meigarom.github.io, edubuntu.net, jonniedarko.github.io plus two other host names have IP numbers in common with 21lessons.com.
Name Servers
The NS records for 21lessons.com delegate to ns05.domaincontrol.com and ns06.domaincontrol.com.
The name server configuration of 21lessons.com is shared with other domains, for instance deerwoods.com, choudharytravels.in, tecish.com and two others.
ns05.domaincontrol.com resolves to 97.74.102.3 and 2603:5:2160::3. Likewise, ns06.domaincontrol.com resolves to 173.201.70.3 and 2603:5:2260::3 — two IP addresses apiece.