121learn.com - robtex.com
121learn.com
| CNAME | www.121learn.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 39.105.171.19🇨🇳 Alibaba-Cloud39.104.0.0/15 CT BeiJing IDC | ||||||
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=1777283531 | ||||||
Subdomains
Same first word
DNS History
7 records (3 active, 4 former)
○NSns3.dnsv3.com2015-06-14 → 2016-12-30 · 4 obs
● 2015-06-14 22:16:52
● 2016-12-30 02:50:14
○ 2026-04-06 14:43:52
○ 2026-04-27 09:55:24
● 2016-12-30 02:50:14
○ 2026-04-06 14:43:52
○ 2026-04-27 09:55:24
○NSns4.dnsv3.com2015-06-14 → 2016-12-30 · 4 obs
● 2015-06-14 22:16:52
● 2016-12-30 02:50:14
○ 2026-04-06 14:43:52
○ 2026-04-27 09:55:24
● 2016-12-30 02:50:14
○ 2026-04-06 14:43:52
○ 2026-04-27 09:55:24
●NSvip3.alidns.com2026-04-06 → 2026-04-27 · 3 obs
○ 2016-12-30 02:50:14
● 2026-04-06 14:43:52
● 2026-04-27 09:55:24
● 2026-04-06 14:43:52
● 2026-04-27 09:55:24
●NSvip4.alidns.com2026-04-06 → 2026-04-27 · 3 obs
○ 2016-12-30 02:50:14
● 2026-04-06 14:43:52
● 2026-04-27 09:55:24
● 2026-04-06 14:43:52
● 2026-04-27 09:55:24
○MXwb03.121learn.com2015-06-14 → 2016-12-30 · 4 obs
● 2015-06-14 22:16:52
● 2016-12-30 02:50:14
○ 2026-04-06 14:43:52
○ 2026-04-27 09:55:24
● 2016-12-30 02:50:14
○ 2026-04-06 14:43:52
○ 2026-04-27 09:55:24
○A211.151.173.882015-06-14 → 2016-04-10 · 4 obs
● 2015-06-14 22:16:52
● 2016-04-10 17:27:00
○ 2016-12-30 02:50:14
○ 2026-04-27 09:55:24
● 2016-04-10 17:27:00
○ 2016-12-30 02:50:14
○ 2026-04-27 09:55:24
●CNAMEwww.121learn.com2026-04-06 → 2026-04-27 · 2 obs
● 2026-04-06 14:43:52
● 2026-04-27 09:55:24
● 2026-04-27 09:55:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net, l.gtld-servers.net... | - |
| 121learn.com | vip3.alidns.com, vip4.alidns.com | 22 records |
✅ Authoritative Response
Server:121.40.6.163
NS records: vip3.alidns.com, vip4.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 121learn.com (unsigned zone)
⏱️ Timing
Total: 759ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | vip4.alidns.com, vip3.alidns.com |
| TXT | 2 | _globalsign-domain-verification=q0GzW4bz, _globalsign-domain-verification=7TuOlUZh |
| CNAME | 1 | www.121learn.com |
| SOA | 1 | vip3.alidns.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 22
Out-of-bailiwick: 22 (vip3.alidns.com, vip3.alidns.com, vip3.alidns.com...)
Analysis
Hierarchy
121learn.com is a parent of www.121learn.com, t.121learn.com and cms.121learn.com.
IP Addresses
121learn.com resolves to a single IP address: 39.105.171.19.
Other host names, for instance www.121learn.com, share IP numbers with 121learn.com.