21cf.net.cn - robtex.com
21cf.net.cn
net.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2028151897 | ||||||
Same first word
Similar names
fc21.com |
12cf.com.cn |
cf12.org |
fc21.cn |
fc21.jp |
1c2f.tv |
fc21.co.jp |
1c2f.com |
cf12.com |
fc12.cn |
21fc.net |
c21f.com |
cf21.com |
f12c.com |
fc12.com |
21fc.com |
12fc.com |
c1f2.com |
12fc.nl |
cf12.net |
2f1c.com |
DNS History
2 records (2 active, 0 former)
●NSdns1.cscdns.net2026-04-09 → 2026-04-12 · 2 obs
● 2026-04-09 08:17:14
● 2026-04-12 07:40:00
● 2026-04-12 07:40:00
●NSdns2.cscdns.net2026-04-09 → 2026-04-12 · 2 obs
● 2026-04-09 08:17:14
● 2026-04-12 07:40:00
● 2026-04-12 07:40:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | c.dns.cn, e.dns.cn, b.dns.cn, a.dns.cn... | - |
| 21cf.net.cn | dns1.cscdns.net, dns2.cscdns.net | - |
✅ Authoritative Response
Server:156.154.131.100
NS records: dns1.cscdns.net, dns2.cscdns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21cf.net.cn (unsigned zone)
⏱️ Timing
Total: 290ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns1.cscdns.net, dns2.cscdns.net |
| SOA | 1 | dns1.cscdns.net hostmaster.cscdns.net |
Analysis
Name Servers
21cf.net.cn's delegation is to two name servers dns1.cscdns.net and dns2.cscdns.net.
21cf.net.cn shares the same name server configuration as other domains, such as sacidol.com, thedorseygroup.com, minton.com.my, bdecofinity.com and tekfor-services.de.
21cf.net.cn shares name servers with other domains to at least some extent, for instance lasallena.net and 321flyasiana.com.
Host names with two IP numbers: dns1.cscdns.net points to 2610:a1:1022::100 and 156.154.130.100; dns2.cscdns.net points to 2610:a1:1023::100 and 156.154.131.100