51ldb.cn - robtex.com
51ldb.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.106.177.130🇬🇧 XNNET185.106.176.0/22 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.onclouddns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.onclouddns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1783322818 | ||||||
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=2035057624 | ||||||
Same first word
Similar names
DNS History
13 records (5 active, 8 former)
○NSdns29.hichina.com2026-06-11 → 2026-06-11 · 4 obs
● 2026-06-11 13:43:04
○ 2026-07-18 15:24:20
○ 2026-07-18 20:33:58
○NSdns30.hichina.com2026-06-11 → 2026-06-11 · 4 obs
● 2026-06-11 13:43:04
○ 2026-07-18 15:24:20
○ 2026-07-18 20:33:58
○NSexpirens3.hichina.com2026-06-11 → 2026-06-11 · 4 obs
● 2026-06-11 13:43:04
○ 2026-07-18 15:24:20
○ 2026-07-18 20:33:58
○NSexpirens4.hichina.com2026-06-11 → 2026-06-11 · 4 obs
● 2026-06-11 13:43:04
○ 2026-07-18 15:24:20
○ 2026-07-18 20:33:58
○NSns1.judns.com2026-02-22 → 2026-05-12 · 4 obs
● 2026-05-12 09:16:30
○ 2026-06-11 13:43:04
○ 2026-07-18 20:33:58
●NSns1.julydns.com2026-02-22 → 2026-07-18 · 5 obs
● 2026-05-12 09:16:30
○ 2026-06-11 13:43:04
● 2026-07-18 15:24:20
● 2026-07-18 20:33:58
●NSns1.onclouddns.com2026-07-18 → 2026-07-18 · 3 obs
● 2026-07-18 15:24:20
● 2026-07-18 20:33:58
○NSns2.judns.com2026-02-22 → 2026-05-12 · 4 obs
● 2026-05-12 09:16:30
○ 2026-06-11 13:43:04
○ 2026-07-18 20:33:58
●NSns2.julydns.com2026-02-22 → 2026-07-18 · 5 obs
● 2026-05-12 09:16:30
○ 2026-06-11 13:43:04
● 2026-07-18 15:24:20
● 2026-07-18 20:33:58
●NSns2.onclouddns.com2026-07-18 → 2026-07-18 · 3 obs
● 2026-07-18 15:24:20
● 2026-07-18 20:33:58
○A107.163.227.352026-02-22 → 2026-05-12 · 4 obs
● 2026-05-12 09:16:30
○ 2026-06-11 13:43:04
○ 2026-07-18 20:33:58
●A185.106.177.1302026-07-18 → 2026-07-18 · 3 obs
● 2026-07-18 15:24:20
● 2026-07-18 20:33:58
○CNAMEexpired.hichina.com2026-06-11 → 2026-06-11 · 3 obs
○ 2026-07-18 15:24:20
○ 2026-07-18 20:33:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| 51ldb.cn | ns1.onclouddns.com, ns2.onclouddns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.onclouddns.com, ns2.onclouddns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51ldb.cn (unsigned zone)
⏱️ Timing
Total: 1643ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.106.177.130 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
51ldb.cn has exactly one IP address — 185.106.177.130.
yiwoo8.com, tkwlt.com, nchywz.com plus two other host names have IP numbers in common with 51ldb.cn.
Name Servers
Four name servers handle the delegation for 51ldb.cn: ns1.julydns.com, ns2.julydns.com, ns1.onclouddns.com and ns2.onclouddns.com.
There is at least partial name server overlap between 51ldb.cn and other domains — bb90fabfff.top, landscapecn.com, jsfzjn.com and two more among them.
These name servers frequently co-occur with the name servers ns1.judns.com and ns2.judns.com.
ns1.julydns.com and ns2.julydns.com share the IP address 162.159.48.223; ns1.onclouddns.com and ns2.onclouddns.com share the IP address 162.159.27.251.
ns1.julydns.com along with ns2.julydns.com each resolve to 162.159.48.223 IP addresses.
ns1.onclouddns.com along with ns2.onclouddns.com each resolve to 162.159.27.251 IP addresses.