wb03.121learn.com - robtex.com
wb03.121learn.com
| DNSSEC | ⚠️ Not signed | ||||||
121learn.com
| CNAME | www.121learn.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 39.105.171.19🇨🇳 Alibaba-Cloud39.104.0.0/15 CT BeiJing IDC | ||||||
Previously MX for
Similar names
DNS History
1 record (0 active, 1 former)
○A211.151.173.882015-07-23 → 2016-09-23 · 4 obs
● 2015-07-23 05:55:56
● 2016-09-23 14:35:04
○ 2026-04-15 03:25:58
○ 2026-04-27 13:17:32
● 2016-09-23 14:35:04
○ 2026-04-15 03:25:58
○ 2026-04-27 13:17:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, e.gtld-servers.net, i.gtld-servers.net, b.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: 4010ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 22
Out-of-bailiwick: 22 (vip3.alidns.com, vip3.alidns.com, vip3.alidns.com...)