scienceshub.cn - robtex.com
scienceshub.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 149.104.11.179🇭🇰 XNNET149.104.0.0/19 Anchnet Asia Limited | ||||||
| NS | ns1.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 43.165.183.246🇸🇬 TENCENT-NET-AP-CN43.165.128.0/18 Proxy-registered route object | ||||||
| NS | ns2.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 43.165.183.246🇸🇬 TENCENT-NET-AP-CN43.165.128.0/18 Proxy-registered route object | ||||||
| MX | mail.happyisp.com ⭐ | ||||||
| A | 5.161.49.68🇺🇸 HETZNER-CLOUD2-AS5.161.49.0/24 | ||||||
| PTR | mail.happyisp.com | ||||||
| A | 137.184.158.105🇺🇸 DIGITALOCEAN137.184.144.0/20 DigitalOcean | ||||||
| PTR | mail.happyisp.com | ||||||
| TXT | v=spf1 ip6:fd0d:d741:e183::/48 -all | ||||||
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=2035115451 | ||||||
Same first word
scienceshub.cn |
DNS History
9 records (4 active, 5 former)
●NSns1.exp.4cun.com2026-07-31 → 2026-07-31 · 2 obs
● 2026-07-31 09:13:24
○NSns1.judns.com2026-04-14 → 2026-05-24 · 3 obs
● 2026-05-24 22:24:22
○ 2026-07-31 09:13:24
○NSns1.julydns.com2026-04-14 → 2026-05-24 · 3 obs
● 2026-05-24 22:24:22
○ 2026-07-31 09:13:24
●NSns2.exp.4cun.com2026-07-31 → 2026-07-31 · 2 obs
● 2026-07-31 09:13:24
○NSns2.judns.com2026-04-14 → 2026-05-24 · 3 obs
● 2026-05-24 22:24:22
○ 2026-07-31 09:13:24
○NSns2.julydns.com2026-04-14 → 2026-05-24 · 3 obs
● 2026-05-24 22:24:22
○ 2026-07-31 09:13:24
●MXmail.happyisp.com2026-07-31 → 2026-07-31 · 1 obs
●A149.104.11.1792026-07-31 → 2026-07-31 · 2 obs
● 2026-07-31 09:13:24
○A154.212.223.1182026-04-14 → 2026-05-24 · 3 obs
● 2026-05-24 22:24:22
○ 2026-07-31 09:13:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | d.dns.cn, e.dns.cn, a.dns.cn, c.dns.cn... | - |
| scienceshub.cn | ns1.exp.4cun.com, ns2.exp.4cun.com | - |
✅ Authoritative Response
Server:43.165.183.246
NS records: ns1.exp.4cun.com, ns2.exp.4cun.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for scienceshub.cn (unsigned zone)
⏱️ Timing
Total: 4193ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 149.104.11.179 |
| MX | 1 | mail.happyisp.com (pri: 1) |
| TXT | 1 | v=spf1 ip6:fd0d:d741:e183::/48 -all |
Analysis
IP Addresses
scienceshub.cn points to a single IP number: 149.104.11.179.
Additional host names — api.appmedia.cn, poosang.cn, ios.zfsim.cn and two others — share IP numbers with scienceshub.cn.
Name Servers
scienceshub.cn uses two name servers for its delegation: ns1.exp.4cun.com and ns2.exp.4cun.com.
scienceshub.cn shares its name server setup with other domains, including ahwr.cn, dhee.cn, geojournals.org and two others.
At least some of scienceshub.cn's name servers are shared with other domains, for example 50007.cn and mkgzs.cn.
These name servers are often deployed together with the name servers ns3.exp.4cun.com, ns4.exp.4cun.com, ns5.exp.4cun.com and ns6.exp.4cun.com.
ns1.exp.4cun.com resolves to 43.165.183.246; ns2.exp.4cun.com resolves to the same IP address, 43.165.183.246.
Both ns1.exp.4cun.com and ns2.exp.4cun.com resolve to 43.165.183.246 IP addresses each.
Mail Servers
scienceshub.cn has one mail server: mail.happyisp.com.
scienceshub.cn shares the same mail server setup as other domains, including iue.cn, ioio.cn, chapin.com.cn and two others.
mail.happyisp.com directs to two IP numbers, 5.161.49.68 and 137.184.158.105.