know-how.cn - robtex.com
know-how.cn
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034718916 | ||||||
Same first word
Similar names
DNS History
7 records (5 active, 2 former)
●NSdns1.name-services.com2015-08-17 → 2026-04-27 · 2 obs
● 2026-04-27 13:36:36
●NSdns2.name-services.com2015-08-17 → 2026-04-27 · 2 obs
● 2026-04-27 13:36:36
●NSdns3.name-services.com2015-08-17 → 2026-04-27 · 2 obs
● 2026-04-27 13:36:36
●NSdns4.name-services.com2015-08-17 → 2026-04-27 · 2 obs
● 2026-04-27 13:36:36
●NSdns5.name-services.com2015-08-17 → 2026-04-27 · 2 obs
● 2026-04-27 13:36:36
○MXp.nsm.ctmail.com2015-08-17 → 2015-08-17 · 3 obs
○ 2026-04-17 10:26:48
○ 2026-04-27 13:36:36
○A69.64.147.2432015-08-17 → 2015-08-17 · 3 obs
○ 2026-04-17 10:26:48
○ 2026-04-27 13:36:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | b.dns.cn, d.dns.cn, a.dns.cn, e.dns.cn... | - |
| know-how.cn | dns1.name-services.com, dns2.name-services.com, dns3.name-services.com, dns4.name-services.com... | - |
✅ Authoritative Response
Server:64.98.148.137
NS records: dns1.name-services.com, dns2.name-services.com, dns3.name-services.com, dns4.name-services.com, dns5.name-services.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for know-how.cn (unsigned zone)
⏱️ Timing
Total: 518ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
know-how.cn is delegated to five name servers: dns1.name-services.com, dns2.name-services.com, dns3.name-services.com, dns4.name-services.com and dns5.name-services.com.
know-how.cn at least partially shares name servers with other domains, including lhmgroups.com, josephmancuso.net, zealan.net, lunita.org and uk1weddinggifts.com.
Host names with two IP numbers:
dns1.name-services.com points to 2604:4000:2800:2000:64:98:148:137 and 64.98.148.137.
dns2.name-services.com points to 2604:4000:0:d:216:40:47:201 and 216.40.47.201.
dns3.name-services.com points to 2604:4000:2800:2000:64:98:148:138 and 64.98.148.138.
dns4.name-services.com points to 2604:4000:0:d:216:40:47:202 and 216.40.47.202.
dns5.name-services.com points to 2604:4000:2800:2000:64:98:148:139 and 64.98.148.139.