smartu.com.cn - robtex.com
smartu.com.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 156.247.70.179🇧🇷 GNET-AS9294156.247.64.0/20 | ||||||
| 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=1782559360 | ||||||
com.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=2030692660 | ||||||
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
●NSns1.julydns.com2026-06-01 → 2026-07-18 · 2 obs
● 2026-07-18 06:47:34
●NSns2.julydns.com2026-06-01 → 2026-07-18 · 2 obs
● 2026-07-18 06:47:34
●A156.247.70.1792026-07-16 → 2026-07-18 · 3 obs
● 2026-07-16 16:54:22
● 2026-07-18 06:47:34
○A156.252.59.1422026-06-01 → 2026-06-17 · 4 obs
● 2026-06-17 05:41:28
○ 2026-07-16 16:54:22
○ 2026-07-18 06:47:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, b.dns.cn, c.dns.cn... | - |
| smartu.com.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at smartu.com.cn: Error: DNS query timeout: 203.119.29.1 for DS smartu.com.cn
⏱️ Timing
Total: 3994ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 156.247.70.179 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
smartu.com.cn resolves to just one IP address, 156.247.70.179.
Among the host names that share IP numbers with smartu.com.cn is kk0531.com, as one example.
Name Servers
The NS records for smartu.com.cn point to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
At least some of smartu.com.cn's name servers are shared with other domains, for example zkol.com.cn, gfrc.net.cn, hzqrkj.com and two more.
These name servers are often deployed together with the name servers ns1.onclouddns.com, ns2.onclouddns.com, jm1.dns.com and jm2.dns.com.
ns1.judns.com resolves to 162.159.27.251, as does ns2.judns.com. ns1.julydns.com resolves to 162.159.48.223, as does ns2.julydns.com.
ns1.judns.com and ns2.judns.com each have 162.159.27.251 IP addresses.
ns1.julydns.com and ns2.julydns.com each have 162.159.48.223 IP addresses.