21server.com - dns.ninja
21server.com
| CNAME | s.821yo.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 49.235.137.50🇨🇳 TENCENT-NET-AP49.235.128.0/20 | ||||||
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=1781602535 | ||||||
Previously MX for
21server.com |
Subdomains
ns4.21server.com |
Same first word
21server.com |
Similar names
server21.info |
server12.xyz |
server12.nl |
server21.eu |
server21.com |
server21.it |
server12.ru |
server21.org |
server12.com |
server12.de |
DNS History
9 records (3 active, 6 former)
●NSdns15.hichina.com2026-04-06 → 2026-06-16 · 3 obs
○ 2017-06-14 02:56:12
● 2026-04-06 12:02:30
● 2026-06-16 09:38:46
● 2026-04-06 12:02:30
● 2026-06-16 09:38:46
●NSdns16.hichina.com2026-04-06 → 2026-06-16 · 3 obs
○ 2017-06-14 02:56:12
● 2026-04-06 12:02:30
● 2026-06-16 09:38:46
● 2026-04-06 12:02:30
● 2026-06-16 09:38:46
○NSns1.coolvds.com2015-07-23 → 2017-06-14 · 4 obs
● 2015-07-23 18:59:54
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
○NSns2.coolvds.com2015-07-23 → 2017-06-14 · 4 obs
● 2015-07-23 18:59:54
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
○NSns3.coolvds.com2015-07-23 → 2017-06-14 · 4 obs
● 2015-07-23 18:59:54
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
○NSns4.coolvds.com2015-07-23 → 2017-06-14 · 4 obs
● 2015-07-23 18:59:54
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
○MX21server.com2015-07-23 → 2017-06-14 · 4 obs
● 2015-07-23 18:59:54
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
○A185.66.10.1022015-07-23 → 2017-06-14 · 4 obs
● 2015-07-23 18:59:54
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
● 2017-06-14 02:56:12
○ 2026-04-06 12:02:30
○ 2026-06-16 09:38:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 21server.com | dns15.hichina.com, dns16.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.41
NS records: dns15.hichina.com, dns16.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21server.com (unsigned zone)
⏱️ Timing
Total: 600ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns16.hichina.com, dns15.hichina.com |
| CNAME | 1 | s.821yo.com |
| SOA | 1 | dns15.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)
Analysis
Hierarchy
21server.com is the parent zone for ns4.21server.com.
IP Addresses
21server.com directs to one IP number, which is 49.235.137.50.
s.821yo.com, for instance, is one of the other host names sharing IP numbers with 21server.com.