sci-doc.cn - robtex.com
sci-doc.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 156.239.69.116🇭🇰 GNET-AS9294156.239.64.0/20 | ||||||
| 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.judns.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.judns.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 | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1747102896 | ||||||
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=2035066453 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.julydns.com2026-04-29 → 2026-07-20 · 2 obs
● 2026-07-20 17:56:58
●NSns2.julydns.com2026-04-29 → 2026-07-20 · 2 obs
● 2026-07-20 17:56:58
●A156.239.69.1162026-04-29 → 2026-07-20 · 2 obs
● 2026-07-20 17:56:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| sci-doc.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sci-doc.cn (unsigned zone)
⏱️ Timing
Total: 1261ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 156.239.69.116 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
sci-doc.cn resolves to one IP address: 156.239.69.116.
Name Servers
The authoritative name servers for sci-doc.cn are ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
sci-doc.cn has at least partial name server overlap with other domains, such as baodingfangchan.com, shijiebeiop.com, 3xhu.com and two others.
It is common to see these name servers used together with name servers ns1.onclouddns.com and ns2.onclouddns.com.
Four host names each point to one IP address: ns1.judns.com and ns2.judns.com both point to 162.159.27.251, and ns1.julydns.com and ns2.julydns.com both point to 162.159.48.223.
ns1.judns.com and ns2.judns.com are host names that each point to 162.159.27.251 IP addresses.
ns1.julydns.com and ns2.julydns.com are host names that each point to 162.159.48.223 IP addresses.